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Classification system on the selection of number of implants and superstructure design on the basis available vertical restorative space and interforaminal distance for implant supported mandibular overdenture

Identifieur interne : 006674 ( Ncbi/Merge ); précédent : 006673; suivant : 006675

Classification system on the selection of number of implants and superstructure design on the basis available vertical restorative space and interforaminal distance for implant supported mandibular overdenture

Auteurs : Akshay Bhargava [Inde] ; Manoti Sehgal [Inde] ; Sharad Gupta [Inde] ; Praful Mehra [Inde]

Source :

The Journal of the Indian Prosthodontic Society [ 0972-4052 ] ; 2016.

RBID : PMC:4837775

Abstract

Purpose:

The rehabilitation of the edentulous mandible is a challenge due to various limiting factors, of which the available vertical restorative space (AVRS) has been well understood in the literature. However, other anatomic variations such as arch form, arch size, and also the interforaminal distance (IFD) (due to the presence of mandibular nerve) are influential in the selection of size and position of implants, and thereby the prosthetic design.

Materials and Method:

In the present study, 30 edentulous patients from a group of 300 edentulous patients, representing all the three jaw relations (Class I, II, and III) were evaluated for designing a classification that could help in a comprehensive treatment plan for the edentulous mandible. Dental panoramic radiographs of each individual with a trial or final prosthesis were made. The horizontal IFD and AVRS values were calculated.

Results:

One-way analysis of variance followed by post-hoc test (multiple comparison) and Bonferroni method having P < 0.05 as significant value showed an overall mean of 38.9 mm for horizontal distance and 13.69 mm for the AVRS in 30 edentulous patients.

Conclusion:

The results showed that in the majority of cases (90%) there is insufficient space to place a bar attachment supported by five implants for mandibular overdentures. This suggests that a universal treatment plan cannot be followed due to varying anatomic factors. Hence, it becomes imperative to have a set of clinical guidelines based on the AVRS and IFD, for the selection of implant number and type of attachment. The article proposes a simple classification system based on the AVRS and IFD for establishing guidelines in the treatment planning of the edentulous mandible, to aid in selection of implant size, number, and position along with the associated prosthetic design.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4837775

DOI: 10.4103/0972-4052.176541
PubMed: 27141161
PubMed Central: 4837775

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Le document en format XML

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<p>The rehabilitation of the edentulous mandible is a challenge due to various limiting factors, of which the available vertical restorative space (AVRS) has been well understood in the literature. However, other anatomic variations such as arch form, arch size, and also the interforaminal distance (IFD) (due to the presence of mandibular nerve) are influential in the selection of size and position of implants, and thereby the prosthetic design.</p>
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<sec id="st2"><title>Materials and Method:</title>
<p>In the present study, 30 edentulous patients from a group of 300 edentulous patients, representing all the three jaw relations (Class I, II, and III) were evaluated for designing a classification that could help in a comprehensive treatment plan for the edentulous mandible. Dental panoramic radiographs of each individual with a trial or final prosthesis were made. The horizontal IFD and AVRS values were calculated.</p>
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<p>One-way analysis of variance followed by <italic>post-hoc</italic>
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<p>The results showed that in the majority of cases (90%) there is insufficient space to place a bar attachment supported by five implants for mandibular overdentures. This suggests that a universal treatment plan cannot be followed due to varying anatomic factors. Hence, it becomes imperative to have a set of clinical guidelines based on the AVRS and IFD, for the selection of implant number and type of attachment. The article proposes a simple classification system based on the AVRS and IFD for establishing guidelines in the treatment planning of the edentulous mandible, to aid in selection of implant size, number, and position along with the associated prosthetic design.</p>
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  <front><journal-meta><journal-id journal-id-type="nlm-ta">J Indian Prosthodont Soc</journal-id>
<journal-id journal-id-type="iso-abbrev">J Indian Prosthodont Soc</journal-id>
<journal-id journal-id-type="publisher-id">JIPS</journal-id>
<journal-title-group><journal-title>The Journal of the Indian Prosthodontic Society</journal-title>
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<issn pub-type="epub">1998-4057</issn>
<publisher><publisher-name>Medknow Publications & Media Pvt Ltd</publisher-name>
<publisher-loc>India</publisher-loc>
</publisher>
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<article-meta><article-id pub-id-type="pmid">27141161</article-id>
<article-id pub-id-type="pmc">4837775</article-id>
<article-id pub-id-type="publisher-id">JIPS-16-131</article-id>
<article-id pub-id-type="doi">10.4103/0972-4052.176541</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>Classification system on the selection of number of implants and superstructure design on the basis available vertical restorative space and interforaminal distance for implant supported mandibular overdenture</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Bhargava</surname>
<given-names>Akshay</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Sehgal</surname>
<given-names>Manoti</given-names>
</name>
<xref ref-type="aff" rid="aff2">1</xref>
<xref ref-type="corresp" rid="cor1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Gupta</surname>
<given-names>Sharad</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
<contrib contrib-type="author"><name><surname>Mehra</surname>
<given-names>Praful</given-names>
</name>
<xref ref-type="aff" rid="aff1"></xref>
</contrib>
</contrib-group>
<aff id="aff1">Department of Prosthodontics, Institute of Technology and Sciences, Centre for Dental Studies and Research, Ghaziabad, Uttar Pradesh, India</aff>
<aff id="aff2"><label>1</label>
Department of Prosthodontics, Faculty of Dental Sciences, SGT University, Gurgaon, Haryana, India</aff>
<author-notes><corresp id="cor1"><bold>Address for correspondence:</bold>
 Dr. Manoti Sehgal, 1225/19 Hari Nagar, Rohtak - 124 001, Haryana, India. E-mail: <email xlink:href="manoti.02@gmail.com">manoti.02@gmail.com</email>
</corresp>
</author-notes>
<pub-date pub-type="ppub"><season>Apr-Jun</season>
<year>2016</year>
</pub-date>
<volume>16</volume>
<issue>2</issue>
<fpage>131</fpage>
<lpage>135</lpage>
<history><date date-type="received"><day>09</day>
<month>1</month>
<year>2015</year>
</date>
<date date-type="accepted"><day>04</day>
<month>10</month>
<year>2015</year>
</date>
</history>
<permissions><copyright-statement>Copyright: © The Journal of Indian Prosthodontic Society</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>Purpose:</title>
<p>The rehabilitation of the edentulous mandible is a challenge due to various limiting factors, of which the available vertical restorative space (AVRS) has been well understood in the literature. However, other anatomic variations such as arch form, arch size, and also the interforaminal distance (IFD) (due to the presence of mandibular nerve) are influential in the selection of size and position of implants, and thereby the prosthetic design.</p>
</sec>
<sec id="st2"><title>Materials and Method:</title>
<p>In the present study, 30 edentulous patients from a group of 300 edentulous patients, representing all the three jaw relations (Class I, II, and III) were evaluated for designing a classification that could help in a comprehensive treatment plan for the edentulous mandible. Dental panoramic radiographs of each individual with a trial or final prosthesis were made. The horizontal IFD and AVRS values were calculated.</p>
</sec>
<sec id="st3"><title>Results:</title>
<p>One-way analysis of variance followed by <italic>post-hoc</italic>
 test (multiple comparison) and Bonferroni method having <italic>P</italic>
 < 0.05 as significant value showed an overall mean of 38.9 mm for horizontal distance and 13.69 mm for the AVRS in 30 edentulous patients.</p>
</sec>
<sec id="st4"><title>Conclusion:</title>
<p>The results showed that in the majority of cases (90%) there is insufficient space to place a bar attachment supported by five implants for mandibular overdentures. This suggests that a universal treatment plan cannot be followed due to varying anatomic factors. Hence, it becomes imperative to have a set of clinical guidelines based on the AVRS and IFD, for the selection of implant number and type of attachment. The article proposes a simple classification system based on the AVRS and IFD for establishing guidelines in the treatment planning of the edentulous mandible, to aid in selection of implant size, number, and position along with the associated prosthetic design.</p>
</sec>
</abstract>
<kwd-group><kwd>Attachment</kwd>
<kwd>available vertical restorative space</kwd>
<kwd>implant</kwd>
<kwd>interforaminal distance</kwd>
<kwd>mandibular overdenture</kwd>
</kwd-group>
</article-meta>
</front>
</pmc>
<affiliations><list><country><li>Inde</li>
</country>
</list>
<tree><country name="Inde"><noRegion><name sortKey="Bhargava, Akshay" sort="Bhargava, Akshay" uniqKey="Bhargava A" first="Akshay" last="Bhargava">Akshay Bhargava</name>
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<name sortKey="Sehgal, Manoti" sort="Sehgal, Manoti" uniqKey="Sehgal M" first="Manoti" last="Sehgal">Manoti Sehgal</name>
</country>
</tree>
</affiliations>
</record>

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Classification system on the selection of number of implants and superstructure design on the basis available vertical restorative space and interforaminal distance for implant supported mandibular overdenture

Classification system on the selection of number of implants and superstructure design on the basis available vertical restorative space and interforaminal distance for implant supported mandibular overdenture

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