Changes in jawbones of male patients with chronic renal failure on digital panoramic radiographs
Identifieur interne : 000629 ( Pmc/Corpus ); précédent : 000628; suivant : 000630Changes in jawbones of male patients with chronic renal failure on digital panoramic radiographs
Auteurs : Saadettin Dagistan ; Ozkan Miloglu ; Fatma CaglayanSource :
- European Journal of Dentistry [ 1305-7456 ] ; 2016.
Abstract
To compare the existence of gonial cortical bone thickness, antegonial index, mandibular canal bone resorption and gonial angle values and pathologies like ground-glass appearance in jawbones and brown tumor in male patients undergoing dialysis due to chronic renal failure and men from the healthy control group on panoramic radiographs.
Panoramic radiographs were taken from 80 male individuals in total (40 normal and 40 dialysis patients). Values obtained from the right and left sides of the mandible were summed and their means were calculated. Gonial cortical thickness, antegonial index and gonial angle values were assessed with the Student's
Statistically significant differences were observed among the antegonial index (
Compared to the control group, decreases were found in gonial cortical bone thicknesses, antegonial index values, mandibular canal wall resorption, and gonial angle values of the patients receiving dialysis treatment due to chronic renal failure. Although it is not statistically significant, pathology with ground-glass appearance was detected in a patient, but no pathologies like brown tumor were observed. These findings from patients with chronic renal failure must be evaluated in panoramic radiography.
Url:
DOI: 10.4103/1305-7456.175699
PubMed: 27011742
PubMed Central: 4784156
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PMC:4784156Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Changes in jawbones of male patients with chronic renal failure on digital panoramic radiographs</title><author><name sortKey="Dagistan, Saadettin" sort="Dagistan, Saadettin" uniqKey="Dagistan S" first="Saadettin" last="Dagistan">Saadettin Dagistan</name><affiliation><nlm:aff id="aff1">Department of Maxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye</nlm:aff></affiliation></author><author><name sortKey="Miloglu, Ozkan" sort="Miloglu, Ozkan" uniqKey="Miloglu O" first="Ozkan" last="Miloglu">Ozkan Miloglu</name><affiliation><nlm:aff id="aff1">Department of Maxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye</nlm:aff></affiliation></author><author><name sortKey="Caglayan, Fatma" sort="Caglayan, Fatma" uniqKey="Caglayan F" first="Fatma" last="Caglayan">Fatma Caglayan</name><affiliation><nlm:aff id="aff1">Department of Maxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye</nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">27011742</idno><idno type="pmc">4784156</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4784156</idno><idno type="RBID">PMC:4784156</idno><idno type="doi">10.4103/1305-7456.175699</idno><date when="2016">2016</date><idno type="wicri:Area/Pmc/Corpus">000629</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000629</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Changes in jawbones of male patients with chronic renal failure on digital panoramic radiographs</title><author><name sortKey="Dagistan, Saadettin" sort="Dagistan, Saadettin" uniqKey="Dagistan S" first="Saadettin" last="Dagistan">Saadettin Dagistan</name><affiliation><nlm:aff id="aff1">Department of Maxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye</nlm:aff></affiliation></author><author><name sortKey="Miloglu, Ozkan" sort="Miloglu, Ozkan" uniqKey="Miloglu O" first="Ozkan" last="Miloglu">Ozkan Miloglu</name><affiliation><nlm:aff id="aff1">Department of Maxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye</nlm:aff></affiliation></author><author><name sortKey="Caglayan, Fatma" sort="Caglayan, Fatma" uniqKey="Caglayan F" first="Fatma" last="Caglayan">Fatma Caglayan</name><affiliation><nlm:aff id="aff1">Department of Maxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye</nlm:aff></affiliation></author></analytic><series><title level="j">European Journal of Dentistry</title><idno type="ISSN">1305-7456</idno><idno type="eISSN">1305-7464</idno><imprint><date when="2016">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="st1"><title>Objective:</title><p>To compare the existence of gonial cortical bone thickness, antegonial index, mandibular canal bone resorption and gonial angle values and pathologies like ground-glass appearance in jawbones and brown tumor in male patients undergoing dialysis due to chronic renal failure and men from the healthy control group on panoramic radiographs.</p></sec><sec id="st2"><title>Materials and Methods:</title><p>Panoramic radiographs were taken from 80 male individuals in total (40 normal and 40 dialysis patients). Values obtained from the right and left sides of the mandible were summed and their means were calculated. Gonial cortical thickness, antegonial index and gonial angle values were assessed with the Student's <italic>t</italic>-test, mandibular canal wall resorption with the Chi-square test, and pathologies such as ground-glass appearance and Brown tumor as “available” or “not available.”</p></sec><sec id="st3"><title>Results:</title><p>Statistically significant differences were observed among the antegonial index (<italic>P</italic> < 0.001), gonial cortical bone thickness (<italic>P</italic> < 0.001), and gonial angle (<italic>P</italic> < 0.001) values of study and control groups. Besides, mandibular canal wall resorption (<italic>P</italic> < 0.001) was also statistically significant. In the study group, pathologies with ground-glass appearance were encountered in mandible, but no radiographic findings were observed similar to brown tumor.</p></sec><sec id="st4"><title>Conclusions:</title><p>Compared to the control group, decreases were found in gonial cortical bone thicknesses, antegonial index values, mandibular canal wall resorption, and gonial angle values of the patients receiving dialysis treatment due to chronic renal failure. Although it is not statistically significant, pathology with ground-glass appearance was detected in a patient, but no pathologies like brown tumor were observed. These findings from patients with chronic renal failure must be evaluated in panoramic radiography.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Raubenheimer, Ej" uniqKey="Raubenheimer E">EJ Raubenheimer</name></author><author><name sortKey="Noffke, Ce" uniqKey="Noffke C">CE Noffke</name></author><author><name sortKey="Hendrik, Hd" uniqKey="Hendrik H">HD Hendrik</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Eknoyan, G" uniqKey="Eknoyan G">G Eknoyan</name></author><author><name sortKey="Lameire, N" uniqKey="Lameire N">N Lameire</name></author><author><name sortKey="Barsoum, R" uniqKey="Barsoum R">R Barsoum</name></author><author><name sortKey="Eckardt, Ku" uniqKey="Eckardt K">KU Eckardt</name></author><author><name sortKey="Levin, A" uniqKey="Levin A">A Levin</name></author><author><name sortKey="Levin, N" uniqKey="Levin N">N 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<front><journal-meta><journal-id journal-id-type="nlm-ta">Eur J Dent</journal-id><journal-id journal-id-type="iso-abbrev">Eur J Dent</journal-id><journal-id journal-id-type="publisher-id">EJD</journal-id><journal-title-group><journal-title>European Journal of Dentistry</journal-title></journal-title-group><issn pub-type="ppub">1305-7456</issn><issn pub-type="epub">1305-7464</issn><publisher><publisher-name>Medknow Publications & Media Pvt Ltd</publisher-name><publisher-loc>India</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">27011742</article-id><article-id pub-id-type="pmc">4784156</article-id><article-id pub-id-type="publisher-id">EJD-10-64</article-id><article-id pub-id-type="doi">10.4103/1305-7456.175699</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>Changes in jawbones of male patients with chronic renal failure on digital panoramic radiographs</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Dagistan</surname><given-names>Saadettin</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib><contrib contrib-type="author"><name><surname>Miloglu</surname><given-names>Ozkan</given-names></name><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="corresp" rid="cor1"></xref></contrib><contrib contrib-type="author"><name><surname>Caglayan</surname><given-names>Fatma</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib></contrib-group><aff id="aff1"><label>1</label>Department of Maxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye</aff><author-notes><corresp id="cor1"><bold>Correspondence:</bold> Dr. Ozkan Miloglu Email: <email xlink:href="omiloglu@hotmail.com">omiloglu@hotmail.com</email></corresp></author-notes><pub-date pub-type="ppub"><season>Jan-Mar</season><year>2016</year></pub-date><volume>10</volume><issue>1</issue><fpage>64</fpage><lpage>68</lpage><permissions><copyright-statement>Copyright: © 2016 European Journal of Dentistry</copyright-statement><copyright-year>2016</copyright-year><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc-sa/3.0"><license-p>This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.</license-p></license></permissions><abstract><sec id="st1"><title>Objective:</title><p>To compare the existence of gonial cortical bone thickness, antegonial index, mandibular canal bone resorption and gonial angle values and pathologies like ground-glass appearance in jawbones and brown tumor in male patients undergoing dialysis due to chronic renal failure and men from the healthy control group on panoramic radiographs.</p></sec><sec id="st2"><title>Materials and Methods:</title><p>Panoramic radiographs were taken from 80 male individuals in total (40 normal and 40 dialysis patients). Values obtained from the right and left sides of the mandible were summed and their means were calculated. Gonial cortical thickness, antegonial index and gonial angle values were assessed with the Student's <italic>t</italic>-test, mandibular canal wall resorption with the Chi-square test, and pathologies such as ground-glass appearance and Brown tumor as “available” or “not available.”</p></sec><sec id="st3"><title>Results:</title><p>Statistically significant differences were observed among the antegonial index (<italic>P</italic> < 0.001), gonial cortical bone thickness (<italic>P</italic> < 0.001), and gonial angle (<italic>P</italic> < 0.001) values of study and control groups. Besides, mandibular canal wall resorption (<italic>P</italic> < 0.001) was also statistically significant. In the study group, pathologies with ground-glass appearance were encountered in mandible, but no radiographic findings were observed similar to brown tumor.</p></sec><sec id="st4"><title>Conclusions:</title><p>Compared to the control group, decreases were found in gonial cortical bone thicknesses, antegonial index values, mandibular canal wall resorption, and gonial angle values of the patients receiving dialysis treatment due to chronic renal failure. Although it is not statistically significant, pathology with ground-glass appearance was detected in a patient, but no pathologies like brown tumor were observed. These findings from patients with chronic renal failure must be evaluated in panoramic radiography.</p></sec></abstract><kwd-group><kwd>Brown tumors</kwd><kwd>chronic renal failure</kwd><kwd>dialysis</kwd><kwd>fibrous dysplasia</kwd><kwd>mandibular bone</kwd></kwd-group></article-meta></front><body><sec sec-type="intro" id="sec1-1"><title>INTRODUCTION</title><p>One of the significant functions of the kidney is regulatory impact on the bone metabolism by enabling active Vitamin D production. Hypocalcemia arises as a result of phosphate retention and calcium loss in kidneys in chronic renal failure; this situation stimulates parathyroid hormone release and leads to secondary hyperparathyroidism (HPT). Low serum calcium and high phosphate concentration cause progressive bone loss with calcium release from bone by increasing the osteoclastic activity. Thus, skeletal changes occur.[<xref rid="ref1" ref-type="bibr">1</xref>]</p><p>Parathyroid hormone is defined as tunnel resorption, the earliest finding of osteoclastic response.[<xref rid="ref2" ref-type="bibr">2</xref>] This situation does not show any indications in conventional radiographies. First radiographic changes are seen as intracortical and sub-endosteal resorption areas.[<xref rid="ref3" ref-type="bibr">3</xref>] The earliest radiographic indication related to jawbones is the ground-glass appearance that emerges due to the replacement of the bone tissue by the connective tissue with cortical bone resorption, lamina dura, and trabecular bone loss.[<xref rid="ref4" ref-type="bibr">4</xref>] As a consequence of long-lasting HPT, osteitis fibrosa cystica or skeletal radiolucency areas are called as Brown tumor development.[<xref rid="ref5" ref-type="bibr">5</xref>]</p><p>The aim of this study was to compare the existence of gonial cortical bone thickness, antegonial index, mandibular canal bone resorption, gonial angle values, and pathologies like ground-glass appearance in jawbones and brown tumor in male patients undergoing dialysis due to chronic renal failure and men from the healthy control group on panoramic radiographs.</p></sec><sec sec-type="materials|methods" id="sec1-2"><title>MATERIALS AND METHODS</title><sec id="sec2-1"><title>Study population</title><p>The study consisted of 40 male dialysis patients ([ages between 20 and 77, mean 47.30, standard deviation 15.20] [dialysis duration between 168 months and 4 months, mean 57.10 months and standard deviation 53.75]), who were sent from Atatürk University, Faculty of Medicine, Department of Nephrology to Atatürk University, Faculty of Dentistry, Oral Diagnosis and Radiology Clinic because of their dental problems, and the healthy control group of 40 men (ages varying between 21 and 76, mean 44.55, standard deviation 13.56) who came to our clinic due to various dental problems and had no systemic diseases; 80 individuals in total. Approval was obtained from the Ethics Committee.</p></sec><sec id="sec2-2"><title>Imaging procedure</title><p>All radiographs were performed by radiography technicians who had a minimum working experience of 5 years using an orthopantomography device (Planmeca Promax FIN-00880 [Helsinki, Finland]) and in compliance with the reference points on the device given by the manufacturer.</p></sec><sec id="sec2-3"><title>Image evaluation</title><p>The images were examined by two investigators (both of them, associated professor) at the same time. To check for the diagnostic reproducibility of the inter-reliability of the two investigators, 10% of the radiographs assigned by them were randomly examined each day for 3 consecutive days. Examination of results using the Wilcoxon matched pairs signed-rank test showed no statistically significant differences between the two observers, indicating diagnostic reproducibility. In addition, 10% of the remaining radiographs were selected at random and re-evaluated twice by the same examiners 6 weeks after the first evaluation. Intraexaminer reproducibility was found to be 96% and 90%, respectively. Gonial cortical bone thickness [<xref ref-type="fig" rid="F1">Figure 1-d</xref>], antegonial index [<xref ref-type="fig" rid="F1">Figure 1-c</xref>], and gonial angle [<xref ref-type="fig" rid="F2">Figure 2-a</xref>] measurements were conducted on right and left sides of the mandible separately, and average values were calculated. Mandibular canal wall resorption [<xref ref-type="fig" rid="F2">Figure 2-b</xref>] was separately examined on the right and left sides of the mandible; the ground-glass appearance [<xref ref-type="fig" rid="F3">Figure 3</xref>] and brown tumor were checked both in maxillary and mandibular bone.</p><fig id="F1" position="float"><label>Figure 1</label><caption><p>c - Antegonial index. The cortical width in the region anterior to the gonion at a point identified by extending a line of “best fit” on the anterior border of the ascending ramus, down to the lower border of the mandible; d - gonial cortical bone thickness. The median projection on angulus mandibula bisector of the angle from the parts formed tangents to rear edge of the ramus and to lower edge of the mandible on the orthopantomography</p></caption><graphic xlink:href="EJD-10-64-g001"></graphic></fig><fig id="F2" position="float"><label>Figure 2</label><caption><p>a - Gonial angle measurement. The measurement site in the radiograph was determined to be a point on the mandibular border at the intersection of a line tangential to the most inferior points at the mandibular angle and the lower border of the mandibular body, and a line tangential to the posterior borders of the ramus and the condyle; b - mandibular canal wall resorption</p></caption><graphic xlink:href="EJD-10-64-g002"></graphic></fig><fig id="F3" position="float"><label>Figure 3</label><caption><p>Ground-glass appearance</p></caption><graphic xlink:href="EJD-10-64-g003"></graphic></fig></sec><sec id="sec2-4"><title>Statistical analysis</title><p>The statistical analyses were assessed with the Student's <italic>t</italic>-test according to the heterogeneity of the variances, mandibular canal wall resorption with the Chi-square test, and pathologies such as ground-glass appearance and Brown tumor as “available” or “not available.”</p></sec></sec><sec sec-type="results" id="sec1-3"><title>RESULTS</title><p>There were statistically important differences between the antegonial index (<italic>t</italic> = 7.00, <italic>P</italic> < 0.001) values of dialysis patients and the control group. Similarly, statistically important differences were observed between the two groups in terms of gonial cortical bone thickness (<italic>t</italic> = 8.26, <italic>P</italic> < 0.001) and gonial angle (<italic>t</italic> = 5.13, <italic>P</italic> < 0.001) values.</p><p>Mandibular canal wall resorption (χ<sup>2</sup> = 8.26 <italic>P</italic> < 0.001) was found statistically significant and the difference emerged as 77.5% in the patient group and 5% in the control group.</p><p>Pathology with ground-glass appearance was detected only in one individual from the patient group, and no pathologies like Brown tumor were encountered.</p><p>Average antegonial index values of the dialysis and control group individuals are given in <xref ref-type="table" rid="T1">Table 1</xref>, their average gonial cortical bone thickness values in <xref ref-type="table" rid="T2">Table 2</xref>, average gonial angle values in <xref ref-type="table" rid="T3">Table 3</xref>, and mandibular canal wall resorption values in <xref ref-type="table" rid="T4">Table 4</xref>.</p><table-wrap id="T1" position="float"><label>Table 1</label><caption><p>Antegonial index value of dialysis patients and the control group</p></caption><graphic xlink:href="EJD-10-64-g004"></graphic></table-wrap><table-wrap id="T2" position="float"><label>Table 2</label><caption><p>Gonial cortical bone thickness measurements of dialysis patients and the control group</p></caption><graphic xlink:href="EJD-10-64-g005"></graphic></table-wrap><table-wrap id="T3" position="float"><label>Table 3</label><caption><p>Gonial angle of dialysis patients and the control group</p></caption><graphic xlink:href="EJD-10-64-g006"></graphic></table-wrap><table-wrap id="T4" position="float"><label>Table 4</label><caption><p>Mandibular canal wall resorption of dialysis patients and the control group values</p></caption><graphic xlink:href="EJD-10-64-g007"></graphic></table-wrap></sec><sec sec-type="discussion" id="sec1-4"><title>DISCUSSION</title><p>Changes in the hormone mineral (Hormone-minerale) metabolism may lead to losses in the bone structure. The best-known examples of the metabolic bone losses are HPT, postmenopausal osteoporosis, and hypercortisonism. HPT is divided into two subgroups as primary and secondary. Secondary HPT is especially seen in patients with advanced renal failure.[<xref rid="ref6" ref-type="bibr">6</xref>] In these patients, bone resorptions, Brown tumors, fractures and skeletal deformities are the basic (main) clinical findings considerably influencing the life quality and lifetimes of the affected patients.[<xref rid="ref7" ref-type="bibr">7</xref><xref rid="ref8" ref-type="bibr">8</xref>] Only male patient and control groups were included in this study to prevent the effect of the hormonal changes in the menopausal period on the bone metabolism.</p><p>Bone resorptions and calcifications can easily be determined in panoramic radiograms.[<xref rid="ref9" ref-type="bibr">9</xref>] Panoramic radiographs are used to view the pathologies and cortical bone losses in jaws and teeth in the presence of chronic renal failure.[<xref rid="ref10" ref-type="bibr">10</xref>]</p><p>Gonial cortical bone thickness <1 mm was interpreted as the radiographic indication of metabolic bone diseases.[<xref rid="ref7" ref-type="bibr">7</xref><xref rid="ref11" ref-type="bibr">11</xref>] In a study conducted with 59 (39 HPT and 20 control) individuals, a decrease was observed in the gonial cortical bone thickness in panoramic radiographs of the patient group.[<xref rid="ref12" ref-type="bibr">12</xref>] Gonial cortical bone thickness was found thinner than that of healthy individuals in a study made on a patient group with chronic renal failure.[<xref rid="ref6" ref-type="bibr">6</xref>] It was specified that the gonial cortical bone thickness was thinner in systemic osteoporosis as well.[<xref rid="ref8" ref-type="bibr">8</xref>] In another study, the gonial cortical bone thickness was found <1 mm.[<xref rid="ref13" ref-type="bibr">13</xref>] Gavaldá <italic>et al</italic>.[<xref rid="ref14" ref-type="bibr">14</xref>] stated in their study that the gonial cortical bone was thinner in hemodialysis patients. In our study, the gonial cortical bone thickness was thinner in patients with renal failure compared to the control group, and it corresponded to the present studies.</p><p>Mandibular canal is mostly seen as radiolucency line that has a uniform width and borders as it surrounded by radiopaque walls.[<xref rid="ref15" ref-type="bibr">15</xref>] Vertical localization and status of the canal can be determined in panoramic radiographs.[<xref rid="ref13" ref-type="bibr">13</xref>] Mandibular canal wall resorption was observed only in one of 38 patients in the study conducted by Kelly <italic>et al</italic>.[<xref rid="ref16" ref-type="bibr">16</xref>] Gavaldá <italic>et al</italic>.[<xref rid="ref14" ref-type="bibr">14</xref>] revealed in their study that there were mandibular canal wall resorptions in hemodialysis patients. Kim and Park[<xref rid="ref17" ref-type="bibr">17</xref>] observed a complete or partial loss on the mandibular canal walls of 8 patients in their study including 31 secondary HPT patients, who underwent dialysis. In our study, mandibular canal wall resorption was encountered in 64 of 80 canals that belonged to 40 patients, and higher values were found compared to the present studies. Mandibular canal wall resorption studies were also carried out on different groups apart from renal disease. It was suggested in a study conducted on 128 men and women that the upper wall of the mandibular canal was more resorbed in edentulous women than edentulous men and canal wall resorptions could also be observed in systemic situations such as senility, asthma, and thyroid diseases.[<xref rid="ref13" ref-type="bibr">13</xref>]</p><p>No studies were discovered in the literature regarding the antegonial index in digital panoramic radiograms of the patients that underwent dialysis due to chronic renal failure. Rai <italic>et al</italic>.[<xref rid="ref18" ref-type="bibr">18</xref>] found a statistically significant difference between the antegonial index values in their study including 26 HPT patients and a healthy control group. However, Padbury <italic>et al</italic>.[<xref rid="ref19" ref-type="bibr">19</xref>] could not find any statistically significant difference between the antegonial index values in their study including 39 HPT patients and a healthy control group. In our study, a significant difference was found between dialysis patients and the control group in terms of antegonial index values. In addition, important differences were observed between the control group and patient group in many studies conducted on the mandibular cortical bones of the patient groups with chronic renal failure. It was specified that the cortical bones of the patient group were thinner.[<xref rid="ref1" ref-type="bibr">1</xref><xref rid="ref11" ref-type="bibr">11</xref>]</p><p>It was also stated that panoramic radiograms were a useful tool for measuring the mandibular gonial angles.[<xref rid="ref20" ref-type="bibr">20</xref>] Only one study was encountered in the literature regarding the mandibular gonial angle measurements of the patients with chronic renal failure. In this study, which had groups separated between the ages of 5 and 16 and was conducted through comparisons between 23 patients with chronic renal failure and control group, a decrease was observed in the gonial angle values in the 5–14 aged patient group and an increase in the gonial angle values of the 14–16 aged patient group.[<xref rid="ref21" ref-type="bibr">21</xref>] There was an important difference between the gonial angle values of the patient and control groups in our study. This difference may have resulted from the fact that gonial cortical bone thickness was thinner in the patient group. All the same, many studies were carried out between dentate-edentulous individuals, genders and different age groups. While no significant difference was found in gonial angle values in a group of studies,[<xref rid="ref22" ref-type="bibr">22</xref><xref rid="ref23" ref-type="bibr">23</xref>] significant differences were detected in others.[<xref rid="ref24" ref-type="bibr">24</xref><xref rid="ref25" ref-type="bibr">25</xref>]</p><p>Brown tumors emerge as a result of both primary and secondary HPT and secondary HPT is generally resulted from chronic renal failure. It has been determined that Brown tumor develops in 1.5–1.7% of the secondary HPT patients.[<xref rid="ref26" ref-type="bibr">26</xref>] Brown tumor is encountered in women 3 times more often than men.[<xref rid="ref27" ref-type="bibr">27</xref>] In a study conducted on 30 patients, who had received dialysis treatment for at least 3 years, Brown tumor was discovered in 4 patients,[<xref rid="ref12" ref-type="bibr">12</xref>] and radiolucency lesions that reminded of Brown tumor were observed in 2 of 38 patients in a study made by Kelly <italic>et al</italic>.[<xref rid="ref16" ref-type="bibr">16</xref>] The brown tumor development was seen only in one patient in the study, which was conducted by Queiroz <italic>et al</italic>.[<xref rid="ref28" ref-type="bibr">28</xref>] on 174 hemodialysis patients. Vidyullatha <italic>et al</italic>.[<xref rid="ref29" ref-type="bibr">29</xref>] found multiple small radiolucency areas in the posterior mandible of 2 patients in the study they implemented on 40 dialysis patients, and Brown tumor was detected in a patient from the patient group in a study that included 26 primary HPT patients and a control group.[<xref rid="ref16" ref-type="bibr">16</xref>] No Brown tumors were encountered in 74 patients with renal failure in the study made by Shakibaei <italic>et al</italic>.[<xref rid="ref30" ref-type="bibr">30</xref>] Henriques <italic>et al</italic>.[<xref rid="ref11" ref-type="bibr">11</xref>] could not determine Brown tumors in studies they conducted on HPT patients. No Brown tumors were seen in the study of Rani,[<xref rid="ref31" ref-type="bibr">31</xref>] too. In our study, no Brown tumors or similar pathologies were observed in patients and control groups. This situation may have arisen from the patient gender we chose.</p><p>In a study that consisted of only 90 male individuals (30 patient and 60 control), ground-glass appearance was observed in 30% of the secondary HPT patients, but no appearance was found in the control group.[<xref rid="ref11" ref-type="bibr">11</xref>] No lesions with ground-glass appearance were encountered in the study conducted on the patient group including 12 patients with chronic renal failure.[<xref rid="ref6" ref-type="bibr">6</xref>] In the study implemented by Henriques <italic>et al</italic>.[<xref rid="ref12" ref-type="bibr">12</xref>] on the patient with chronic renal failure, no pathologies with ground-glass appearance were discovered. Padbury <italic>et al</italic>.[<xref rid="ref19" ref-type="bibr">19</xref>] did not discover any pathology with a ground-glass appearance in their study that included HPT patients. In our study, ground-glass appearance was encountered only in one patient, but not seen in the control group. Parathyroid hormone value of this patient was 1000 pg/ml, and parathyroid adenoma was detected in this patient.</p></sec><sec sec-type="conclusions" id="sec1-5"><title>CONCLUSIONS</title><p>Pathologies with ground-glass appearance, brown tumors and cortical bone losses that emerge in the jawbones of the patients receiving dialysis treatment due to chronic renal failure can be evaluated in digital panoramic radiograms.</p><sec id="sec2-5"><title>Financial support and sponsorship</title><p>Nil.</p></sec><sec id="sec2-6"><title>Conflicts of interest</title><p>There are no conflicts of interest.</p></sec></sec></body><back><ref-list><title>REFERENCES</title><ref id="ref1"><label>1</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Raubenheimer</surname><given-names>EJ</given-names></name><name><surname>Noffke</surname><given-names>CE</given-names></name><name><surname>Hendrik</surname><given-names>HD</given-names></name></person-group><article-title>Chronic kidney disease-mineral bone disorder: An update on the pathology and cranial manifestations</article-title><source>J Oral Pathol Med</source><year>2015</year><volume>44</volume><fpage>239</fpage><lpage>43</lpage><pub-id pub-id-type="pmid">24646006</pub-id></element-citation></ref><ref id="ref2"><label>2</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Eknoyan</surname><given-names>G</given-names></name><name><surname>Lameire</surname><given-names>N</given-names></name><name><surname>Barsoum</surname><given-names>R</given-names></name><name><surname>Eckardt</surname><given-names>KU</given-names></name><name><surname>Levin</surname><given-names>A</given-names></name><name><surname>Levin</surname><given-names>N</given-names></name><etal></etal></person-group><article-title>The burden of kidney disease: Improving global outcomes</article-title><source>Kidney Int</source><year>2004</year><volume>66</volume><fpage>1310</fpage><lpage>4</lpage><pub-id pub-id-type="pmid">15458424</pub-id></element-citation></ref><ref id="ref3"><label>3</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Meema</surname><given-names>M</given-names></name><name><surname>Meema</surname><given-names>S</given-names></name></person-group><article-title>Microscopic quantitation of periosteal resorption in secondary hyperparathyroidism of chronic renal failure</article-title><source>Clin Orthop</source><year>1978</year><volume>130</volume><fpage>197</fpage><lpage>202</lpage></element-citation></ref><ref id="ref4"><label>4</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Martin</surname><given-names>A</given-names></name><name><surname>David</surname><given-names>V</given-names></name><name><surname>Quarles</surname><given-names>LD</given-names></name></person-group><article-title>Regulation and function of the FGF23/klotho endocrine pathways</article-title><source>Physiol Rev</source><year>2012</year><volume>92</volume><fpage>131</fpage><lpage>55</lpage><pub-id pub-id-type="pmid">22298654</pub-id></element-citation></ref><ref id="ref5"><label>5</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Matsushige</surname><given-names>T</given-names></name><name><surname>Nakaoka</surname><given-names>M</given-names></name><name><surname>Yahara</surname><given-names>K</given-names></name><name><surname>Kagawa</surname><given-names>K</given-names></name><name><surname>Miura</surname><given-names>H</given-names></name><name><surname>Ohnuma</surname><given-names>H</given-names></name><etal></etal></person-group><article-title>Giant cell tumor of the temporal bone with intratumoral hemorrhage</article-title><source>J Clin Neurosci</source><year>2008</year><volume>15</volume><fpage>923</fpage><lpage>7</lpage><pub-id pub-id-type="pmid">18554912</pub-id></element-citation></ref><ref id="ref6"><label>6</label><element-citation publication-type="journal"><person-group person-group-type="author"><name><surname>Bras</surname><given-names>J</given-names></name><name><surname>van Ooij</surname><given-names>CP</given-names></name><name><surname>Abraham-Inpijn</surname><given-names>L</given-names></name><name><surname>Wilmink</surname><given-names>JM</given-names></name><name><surname>Kusen</surname><given-names>GJ</given-names></name></person-group><article-title>Radiographic interpretation of the mandibular angular cortex: A diagnostic tool in metabolic bone loss. 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