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Evaluation of Four Elastomeric Interocclusal Recording Materials

Identifieur interne : 002493 ( Pmc/Curation ); précédent : 002492; suivant : 002494

Evaluation of Four Elastomeric Interocclusal Recording Materials

Auteurs : P. Dua ; Sh Gupta ; S. Ramachandran ; Hs Sandhu

Source :

Medical Journal, Armed Forces India [ 0377-1237 ] ; 2007.

RBID : PMC:4922742

Abstract

Background

The fabrication of dental prosthesis requires the transfer of interocclusal records from patient's mouth to semi-adjustable articulators using different kinds of recording media. Any inaccuracy in these interocclusal records leads to occlusal errors in the final prosthesis. This study was conducted to evaluate the dimensional changes occurring in the interocclusal recording material over a given period of time and the material's resistance to compression during the cast mounting on the articulator.

Methods

In this in vitro study, the linear dimensional change and compressive resistance of four commercially available elastomeric interocclusal recording media was tested. Three were addition silicones and the fourth was a polyether material. Cylindrical samples of 10mm diameter of each material were prepared in three different thicknesses of 2, 4 and 6mm. Ten samples each of thickness of 2, 4 and 6mm for all four materials were prepared (total of 120 samples). The linear dimensional changes of the samples were evaluated after 24 hours of fabrication. The compressive resistance was measured when each of these was subjected to a constant compressive load of 25 Newtons.

Results

The mean linear dimensional change in a horizontal plane was minimum for Kanibite Hard, an addition silicone. Ramitec showed the maximum linear dimensional change. The mean compression distance was least for Futar D Occlusion (an addition silicone) and maximum for Ramitec (a polyether). It was observed that the samples of thickness 2mm for all the materials underwent least compression.

Conclusion

The compressive resistance of each elastomer was inversely proportional to the thickness of the sample. This implies that minimum thickness of the recording materials should be used for recording maxillomandibular relations without sacrificing the strength of the interocclusal record.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4922742

DOI: 10.1016/S0377-1237(07)80143-2
PubMed: 27408006
PubMed Central: 4922742

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P. Dua

<affiliation><nlm:aff id="aff1">Graded Specialist (Prosthodontics) OC, Military Dental Centre, Amritsar-143001</nlm:aff>
<wicri:noCountry code="subfield">Amritsar-143001</wicri:noCountry>
</affiliation>

Sh Gupta

<affiliation><nlm:aff id="aff2">Classified Specialist (Prosthodontics), Air Force Institute of Dental Sciences, Agram Post, Bangalore - 560007</nlm:aff>
<wicri:noCountry code="subfield">Bangalore - 560007</wicri:noCountry>
</affiliation>

S. Ramachandran

<affiliation><nlm:aff id="aff3">Associate Professor (Prosthodontics), Dept of Dental Surgery, AFMC, Pune</nlm:aff>
<wicri:noCountry code="subfield">Pune</wicri:noCountry>
</affiliation>

Hs Sandhu

<affiliation><nlm:aff id="aff4">Classified Specialist (Prosthodontics), 33 Corps Dental Unit, C/o 99 APO</nlm:aff>
<wicri:noCountry code="subfield">C/o 99 APO</wicri:noCountry>
</affiliation>

Le document en format XML

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<front><div type="abstract" xml:lang="en"><sec><title>Background</title>
<p>The fabrication of dental prosthesis requires the transfer of interocclusal records from patient's mouth to semi-adjustable articulators using different kinds of recording media. Any inaccuracy in these interocclusal records leads to occlusal errors in the final prosthesis. This study was conducted to evaluate the dimensional changes occurring in the interocclusal recording material over a given period of time and the material's resistance to compression during the cast mounting on the articulator.</p>
</sec>
<sec><title>Methods</title>
<p>In this in vitro study, the linear dimensional change and compressive resistance of four commercially available elastomeric interocclusal recording media was tested. Three were addition silicones and the fourth was a polyether material. Cylindrical samples of 10mm diameter of each material were prepared in three different thicknesses of 2, 4 and 6mm. Ten samples each of thickness of 2, 4 and 6mm for all four materials were prepared (total of 120 samples). The linear dimensional changes of the samples were evaluated after 24 hours of fabrication. The compressive resistance was measured when each of these was subjected to a constant compressive load of 25 Newtons.</p>
</sec>
<sec><title>Results</title>
<p>The mean linear dimensional change in a horizontal plane was minimum for Kanibite Hard, an addition silicone. Ramitec showed the maximum linear dimensional change. The mean compression distance was least for Futar D Occlusion (an addition silicone) and maximum for Ramitec (a polyether). It was observed that the samples of thickness 2mm for all the materials underwent least compression.</p>
</sec>
<sec><title>Conclusion</title>
<p>The compressive resistance of each elastomer was inversely proportional to the thickness of the sample. This implies that minimum thickness of the recording materials should be used for recording maxillomandibular relations without sacrificing the strength of the interocclusal record.</p>
</sec>
</div>
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<journal-id journal-id-type="iso-abbrev">Med J Armed Forces India</journal-id>
<journal-title-group><journal-title>Medical Journal, Armed Forces India</journal-title>
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<article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject>
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<title-group><article-title>Evaluation of Four Elastomeric Interocclusal Recording Materials</article-title>
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<contrib-group><contrib contrib-type="author"><name><surname>Dua</surname>
<given-names>P</given-names>
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<contrib contrib-type="author"><name><surname>Gupta</surname>
<given-names>SH</given-names>
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<given-names>S</given-names>
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<contrib contrib-type="author"><name><surname>Sandhu</surname>
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<aff id="aff1"><label>*</label>
Graded Specialist (Prosthodontics) OC, Military Dental Centre, Amritsar-143001</aff>
<aff id="aff2"><label>+</label>
Classified Specialist (Prosthodontics), Air Force Institute of Dental Sciences, Agram Post, Bangalore - 560007</aff>
<aff id="aff3"><label>#</label>
Associate Professor (Prosthodontics), Dept of Dental Surgery, AFMC, Pune</aff>
<aff id="aff4"><label>**</label>
Classified Specialist (Prosthodontics), 33 Corps Dental Unit, C/o 99 APO</aff>
<pub-date pub-type="ppub"><month>7</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub"><day>21</day>
<month>7</month>
<year>2011</year>
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<volume>63</volume>
<issue>3</issue>
<fpage>237</fpage>
<lpage>240</lpage>
<history><date date-type="received"><day>28</day>
<month>6</month>
<year>2005</year>
</date>
<date date-type="accepted"><day>19</day>
<month>12</month>
<year>2005</year>
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<permissions><copyright-statement>.</copyright-statement>
<copyright-year>2007</copyright-year>
<copyright-holder>Director General, Armed Forces Medical Services</copyright-holder>
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<abstract id="ceab10"><sec><title>Background</title>
<p>The fabrication of dental prosthesis requires the transfer of interocclusal records from patient's mouth to semi-adjustable articulators using different kinds of recording media. Any inaccuracy in these interocclusal records leads to occlusal errors in the final prosthesis. This study was conducted to evaluate the dimensional changes occurring in the interocclusal recording material over a given period of time and the material's resistance to compression during the cast mounting on the articulator.</p>
</sec>
<sec><title>Methods</title>
<p>In this in vitro study, the linear dimensional change and compressive resistance of four commercially available elastomeric interocclusal recording media was tested. Three were addition silicones and the fourth was a polyether material. Cylindrical samples of 10mm diameter of each material were prepared in three different thicknesses of 2, 4 and 6mm. Ten samples each of thickness of 2, 4 and 6mm for all four materials were prepared (total of 120 samples). The linear dimensional changes of the samples were evaluated after 24 hours of fabrication. The compressive resistance was measured when each of these was subjected to a constant compressive load of 25 Newtons.</p>
</sec>
<sec><title>Results</title>
<p>The mean linear dimensional change in a horizontal plane was minimum for Kanibite Hard, an addition silicone. Ramitec showed the maximum linear dimensional change. The mean compression distance was least for Futar D Occlusion (an addition silicone) and maximum for Ramitec (a polyether). It was observed that the samples of thickness 2mm for all the materials underwent least compression.</p>
</sec>
<sec><title>Conclusion</title>
<p>The compressive resistance of each elastomer was inversely proportional to the thickness of the sample. This implies that minimum thickness of the recording materials should be used for recording maxillomandibular relations without sacrificing the strength of the interocclusal record.</p>
</sec>
</abstract>
<kwd-group id="cekeyws10"><title>Key Words</title>
<kwd>Interocclusal records</kwd>
<kwd>Articulation</kwd>
<kwd>Occlusion</kwd>
<kwd>Linear dimensional change</kwd>
<kwd>Compressive resistance</kwd>
</kwd-group>
</article-meta>
</front>
</pmc>
</record>

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Evaluation of Four Elastomeric Interocclusal Recording Materials

Evaluation of Four Elastomeric Interocclusal Recording Materials

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