Importance of a distal proximal contact on load transfer by implant-supported single adjacent crowns in posterior region of the mandible: a photoelastic study
Identifieur interne : 002435 ( Main/Exploration ); précédent : 002434; suivant : 002436Importance of a distal proximal contact on load transfer by implant-supported single adjacent crowns in posterior region of the mandible: a photoelastic study
Auteurs : Fábio Afrânio De Aguiar Júnior ; Rodrigo Tiossi ; Ana Paula Macedo ; Maria Da Gloria Chiarello De Mattos ; Ricardo Faria Ribeiro ; Renata Cristina Silveira RodriguesSource :
- Journal of Applied Oral Science [ 1678-7757 ] ; 2013.
Abstract
This study aimed to evaluate the importance of a distal proximal contact on the load transfer to the posterior region of the mandible by non-splinted adjacent implant-supported crowns using photoelastic stress analysis.
A rectangular model (68x30x15 mm) was made of polymethylmethacrylate resin to simulate half of the mandibular arch. One model was completed with resin replicas representing the first premolar and second molar and with two 3.75 mm dia.x11 mm internal hexagon threaded implants replacing the second premolar and first molar. The other model was manufactured in the same way but without the second molar. Both models were duplicated using photoelastic resin. The roots of the teeth replicas were covered with a layer of polyether impression material to simulate the periodontal ligament. Two different vertical loads were applied to the crowns as follows: 1 - single static point load alternately applied to the crowns replacing the second premolar and first molar (50 N); 2 - simultaneous static point loads applied to both of the crowns replacing the second premolar and first molar (100 N). The resulting isochromatic fringe pattern in the photoelastic model was monitored and photographed.
All loading conditions studied showed that the presence of the second molar has changed the load transmission and the pattern of stresses.
Results showed that the presence of a second molar proximal contact can help minimize the stresses around the implants.
Url:
DOI: 10.1590/1679-775720130049
PubMed: 24212984
PubMed Central: 3881849
Affiliations:
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implant-supported single adjacent crowns in posterior region of the mandible: a
photoelastic study</title><author><name sortKey="De Aguiar Junior, Fabio Afranio" sort="De Aguiar Junior, Fabio Afranio" uniqKey="De Aguiar Junior F" first="Fábio Afrânio" last="De Aguiar Júnior">Fábio Afrânio De Aguiar Júnior</name></author><author><name sortKey="Tiossi, Rodrigo" sort="Tiossi, Rodrigo" uniqKey="Tiossi R" first="Rodrigo" last="Tiossi">Rodrigo Tiossi</name></author><author><name sortKey="Macedo, Ana Paula" sort="Macedo, Ana Paula" uniqKey="Macedo A" first="Ana Paula" last="Macedo">Ana Paula Macedo</name></author><author><name sortKey="De Mattos, Maria Da Gloria Chiarello" sort="De Mattos, Maria Da Gloria Chiarello" uniqKey="De Mattos M" first="Maria Da Gloria Chiarello" last="De Mattos">Maria Da Gloria Chiarello De Mattos</name></author><author><name sortKey="Ribeiro, Ricardo Faria" sort="Ribeiro, Ricardo Faria" uniqKey="Ribeiro R" first="Ricardo Faria" last="Ribeiro">Ricardo Faria Ribeiro</name></author><author><name sortKey="Rodrigues, Renata Cristina Silveira" sort="Rodrigues, Renata Cristina Silveira" uniqKey="Rodrigues R" first="Renata Cristina Silveira" last="Rodrigues">Renata Cristina Silveira Rodrigues</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">24212984</idno><idno type="pmc">3881849</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3881849</idno><idno type="RBID">PMC:3881849</idno><idno type="doi">10.1590/1679-775720130049</idno><date when="2013">2013</date><idno type="wicri:Area/Pmc/Corpus">002F77</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002F77</idno><idno type="wicri:Area/Pmc/Curation">002F77</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">002F77</idno><idno type="wicri:Area/Pmc/Checkpoint">001962</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">001962</idno><idno type="wicri:Area/Ncbi/Merge">004B26</idno><idno type="wicri:Area/Ncbi/Curation">004B26</idno><idno type="wicri:Area/Ncbi/Checkpoint">004B26</idno><idno type="wicri:doubleKey">1678-7757:2013:De Aguiar Junior F:importance:of:a</idno><idno type="wicri:Area/Main/Merge">002446</idno><idno type="wicri:Area/Main/Curation">002435</idno><idno type="wicri:Area/Main/Exploration">002435</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Importance of a distal proximal contact on load transfer by
implant-supported single adjacent crowns in posterior region of the mandible: a
photoelastic study</title><author><name sortKey="De Aguiar Junior, Fabio Afranio" sort="De Aguiar Junior, Fabio Afranio" uniqKey="De Aguiar Junior F" first="Fábio Afrânio" last="De Aguiar Júnior">Fábio Afrânio De Aguiar Júnior</name></author><author><name sortKey="Tiossi, Rodrigo" sort="Tiossi, Rodrigo" uniqKey="Tiossi R" first="Rodrigo" last="Tiossi">Rodrigo Tiossi</name></author><author><name sortKey="Macedo, Ana Paula" sort="Macedo, Ana Paula" uniqKey="Macedo A" first="Ana Paula" last="Macedo">Ana Paula Macedo</name></author><author><name sortKey="De Mattos, Maria Da Gloria Chiarello" sort="De Mattos, Maria Da Gloria Chiarello" uniqKey="De Mattos M" first="Maria Da Gloria Chiarello" last="De Mattos">Maria Da Gloria Chiarello De Mattos</name></author><author><name sortKey="Ribeiro, Ricardo Faria" sort="Ribeiro, Ricardo Faria" uniqKey="Ribeiro R" first="Ricardo Faria" last="Ribeiro">Ricardo Faria Ribeiro</name></author><author><name sortKey="Rodrigues, Renata Cristina Silveira" sort="Rodrigues, Renata Cristina Silveira" uniqKey="Rodrigues R" first="Renata Cristina Silveira" last="Rodrigues">Renata Cristina Silveira Rodrigues</name></author></analytic><series><title level="j">Journal of Applied Oral Science</title><idno type="ISSN">1678-7757</idno><idno type="eISSN">1678-7765</idno><imprint><date when="2013">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Objective</title><p>This study aimed to evaluate the importance of a distal proximal contact on the
load transfer to the posterior region of the mandible by non-splinted adjacent
implant-supported crowns using photoelastic stress analysis. </p></sec><sec><title>Material and Methods</title><p>A rectangular model (68x30x15 mm) was made of polymethylmethacrylate resin to
simulate half of the mandibular arch. One model was completed with resin replicas
representing the first premolar and second molar and with two 3.75 mm dia.x11 mm
internal hexagon threaded implants replacing the second premolar and first molar.
The other model was manufactured in the same way but without the second molar.
Both models were duplicated using photoelastic resin. The roots of the teeth
replicas were covered with a layer of polyether impression material to simulate
the periodontal ligament. Two different vertical loads were applied to the crowns
as follows: 1 - single static point load alternately applied to the crowns
replacing the second premolar and first molar (50 N); 2 - simultaneous static
point loads applied to both of the crowns replacing the second premolar and first
molar (100 N). The resulting isochromatic fringe pattern in the photoelastic model
was monitored and photographed.</p></sec><sec><title>Results</title><p>All loading conditions studied showed that the presence of the second molar has
changed the load transmission and the pattern of stresses.</p></sec><sec><title>Conclusion</title><p>Results showed that the presence of a second molar proximal contact can help
minimize the stresses around the implants.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Abboud, M" uniqKey="Abboud M">M Abboud</name></author><author><name sortKey="Koeck, B" uniqKey="Koeck B">B Koeck</name></author><author><name sortKey="Stark, H" uniqKey="Stark H">H Stark</name></author><author><name sortKey="Wahl, G" uniqKey="Wahl G">G Wahl</name></author><author><name sortKey="Paillon, R" uniqKey="Paillon R">R Paillon</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Akca, K" uniqKey="Akca K">K Akça</name></author><author><name sortKey="Cehreli, Mc" uniqKey="Cehreli M">MC Cehreli</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Assuncao, Wg" uniqKey="Assuncao W">WG Assunção</name></author><author><name sortKey="Barao, Va" uniqKey="Barao V">VA Barão</name></author><author><name sortKey="Tabata, Lf" uniqKey="Tabata L">LF 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Waltimo</name></author><author><name sortKey="Weiger, R" uniqKey="Weiger R">R Weiger</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list></list><tree><noCountry><name sortKey="De Aguiar Junior, Fabio Afranio" sort="De Aguiar Junior, Fabio Afranio" uniqKey="De Aguiar Junior F" first="Fábio Afrânio" last="De Aguiar Júnior">Fábio Afrânio De Aguiar Júnior</name><name sortKey="De Mattos, Maria Da Gloria Chiarello" sort="De Mattos, Maria Da Gloria Chiarello" uniqKey="De Mattos M" first="Maria Da Gloria Chiarello" last="De Mattos">Maria Da Gloria Chiarello De Mattos</name><name sortKey="Macedo, Ana Paula" sort="Macedo, Ana Paula" uniqKey="Macedo A" first="Ana Paula" last="Macedo">Ana Paula Macedo</name><name sortKey="Ribeiro, Ricardo Faria" sort="Ribeiro, Ricardo Faria" uniqKey="Ribeiro R" first="Ricardo Faria" last="Ribeiro">Ricardo Faria Ribeiro</name><name sortKey="Rodrigues, Renata Cristina Silveira" sort="Rodrigues, Renata Cristina Silveira" uniqKey="Rodrigues R" first="Renata Cristina Silveira" last="Rodrigues">Renata Cristina Silveira Rodrigues</name><name sortKey="Tiossi, Rodrigo" sort="Tiossi, Rodrigo" uniqKey="Tiossi R" first="Rodrigo" last="Tiossi">Rodrigo Tiossi</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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