Evaluation of impression accuracy for a four-implant mandibular model--a digital approach.
Identifieur interne : 003297 ( Main/Exploration ); précédent : 003296; suivant : 003298Evaluation of impression accuracy for a four-implant mandibular model--a digital approach.
Auteurs : Michael Stimmelmayr [Allemagne] ; Kurt Erdelt ; Jan-Frederik Güth ; Arndt Happe ; Florian BeuerSource :
- Clinical oral investigations [ 1436-3771 ] ; 2012.
Descripteurs français
- KwdFr :
- Arcade dentaire (anatomopathologie), Canine, Conception d'implant dentaire et de pilier, Humains, Imagerie tridimensionnelle (), Implants dentaires, Mandibule (anatomopathologie), Matériaux empreinte dentaire (), Modèles dentaires, Molaire, Mâchoire édentée (anatomopathologie), Prothèse dentaire implanto-portée, Résines synthétiques (), Technique de prise d'empreinte (), Technique de prise d'empreinte (instrumentation), Technique de prise d'empreinte (normes), Traitement d'image par ordinateur ().
- MESH :
- anatomopathologie : Arcade dentaire, Mandibule, Mâchoire édentée.
- normes : Technique de prise d'empreinte.
- Canine, Conception d'implant dentaire et de pilier, Humains, Imagerie tridimensionnelle, Implants dentaires, Matériaux empreinte dentaire, Modèles dentaires, Molaire, Prothèse dentaire implanto-portée, Résines synthétiques, Technique de prise d'empreinte, Traitement d'image par ordinateur.
English descriptors
- KwdEn :
- Cuspid, Dental Arch (pathology), Dental Implant-Abutment Design, Dental Implants, Dental Impression Materials (chemistry), Dental Impression Technique (instrumentation), Dental Impression Technique (standards), Dental Impression Technique (statistics & numerical data), Dental Models, Dental Prosthesis, Implant-Supported, Humans, Image Processing, Computer-Assisted (methods), Image Processing, Computer-Assisted (statistics & numerical data), Imaging, Three-Dimensional (methods), Jaw, Edentulous (pathology), Mandible (pathology), Molar, Resins, Synthetic (chemistry).
- MESH :
- chemical , chemistry : Dental Impression Materials, Resins, Synthetic.
- chemical : Dental Implants.
- instrumentation : Dental Impression Technique.
- methods : Image Processing, Computer-Assisted, Imaging, Three-Dimensional.
- pathology : Dental Arch, Jaw, Edentulous, Mandible.
- standards : Dental Impression Technique.
- statistics & numerical data : Dental Impression Technique, Image Processing, Computer-Assisted.
- Cuspid, Dental Implant-Abutment Design, Dental Models, Dental Prosthesis, Implant-Supported, Humans, Molar.
Abstract
Implant-supported prosthodontics requires precise impressions to achieve a passive fit. Since the early 1990s, in vitro studies comparing different implant impression techniques were performed, capturing the data mostly mechanically. The purpose of this study was to evaluate the accuracy of three different impression techniques digitally. Dental implants were inserted bilaterally in ten polymer lower-arch models at the positions of the first molars and canines. From each original model, three different impressions (A, transfer; B, pick-up; and C, splinted pick-up) were taken. Scan-bodies were mounted on the implants of the polymer and on the lab analogues of the stone models and digitized. The scan-body in position 36 (FDI) of the digitized original and master casts were each superimposed, and the deviations of the remaining three scan-bodies were measured three-dimensionally. The systematic error of digitizing the models was 13 μm for the polymer and 5 μm for the stone model. The mean discrepancies of the original model to the stone casts were 124 μm (±34) μm for the transfer technique, 116 (±46) μm for the pick-up technique, and 80 (±25) μm for the splinted pick-up technique. There were statistically significant discrepancies between the evaluated impression techniques (p ≤ 0.025; ANOVA test). The splinted pick-up impression showed the least deviation between original and stone model; transfer and pick-up techniques showed similar results. For better accuracy of implant-supported prosthodontics, the splinted pick-up technique should be used for impressions of four implants evenly spread in edentulous jaws.
DOI: 10.1007/s00784-011-0622-z
PubMed: 22009182
Affiliations:
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Le document en format XML
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(methods)</term><term>Jaw, Edentulous (pathology)</term><term>Mandible (pathology)</term><term>Molar</term><term>Resins, Synthetic (chemistry)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Arcade dentaire (anatomopathologie)</term><term>Canine</term><term>Conception d'implant dentaire et de pilier</term><term>Humains</term><term>Imagerie tridimensionnelle ()</term><term>Implants dentaires</term><term>Mandibule (anatomopathologie)</term><term>Matériaux empreinte dentaire ()</term><term>Modèles dentaires</term><term>Molaire</term><term>Mâchoire édentée (anatomopathologie)</term><term>Prothèse dentaire implanto-portée</term><term>Résines synthétiques ()</term><term>Technique de prise d'empreinte ()</term><term>Technique de prise d'empreinte (instrumentation)</term><term>Technique de prise d'empreinte (normes)</term><term>Traitement d'image par ordinateur ()</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Dental Impression Materials</term><term>Resins, Synthetic</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Dental Implants</term></keywords><keywords scheme="MESH" qualifier="anatomopathologie" xml:lang="fr"><term>Arcade dentaire</term><term>Mandibule</term><term>Mâchoire édentée</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Dental Impression Technique</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Image Processing, Computer-Assisted</term><term>Imaging, Three-Dimensional</term></keywords><keywords scheme="MESH" qualifier="normes" xml:lang="fr"><term>Technique de prise d'empreinte</term></keywords><keywords scheme="MESH" qualifier="pathology" xml:lang="en"><term>Dental Arch</term><term>Jaw, Edentulous</term><term>Mandible</term></keywords><keywords scheme="MESH" qualifier="standards" xml:lang="en"><term>Dental Impression Technique</term></keywords><keywords scheme="MESH" qualifier="statistics & 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Since the early 1990s, in vitro studies comparing different implant impression techniques were performed, capturing the data mostly mechanically. The purpose of this study was to evaluate the accuracy of three different impression techniques digitally. Dental implants were inserted bilaterally in ten polymer lower-arch models at the positions of the first molars and canines. From each original model, three different impressions (A, transfer; B, pick-up; and C, splinted pick-up) were taken. Scan-bodies were mounted on the implants of the polymer and on the lab analogues of the stone models and digitized. The scan-body in position 36 (FDI) of the digitized original and master casts were each superimposed, and the deviations of the remaining three scan-bodies were measured three-dimensionally. The systematic error of digitizing the models was 13 μm for the polymer and 5 μm for the stone model. The mean discrepancies of the original model to the stone casts were 124 μm (±34) μm for the transfer technique, 116 (±46) μm for the pick-up technique, and 80 (±25) μm for the splinted pick-up technique. There were statistically significant discrepancies between the evaluated impression techniques (p ≤ 0.025; ANOVA test). The splinted pick-up impression showed the least deviation between original and stone model; transfer and pick-up techniques showed similar results. For better accuracy of implant-supported prosthodontics, the splinted pick-up technique should be used for impressions of four implants evenly spread in edentulous jaws.</div></front></TEI><affiliations><list><country><li>Allemagne</li></country></list><tree><noCountry><name sortKey="Beuer, Florian" sort="Beuer, Florian" uniqKey="Beuer F" first="Florian" last="Beuer">Florian Beuer</name><name sortKey="Erdelt, Kurt" sort="Erdelt, Kurt" uniqKey="Erdelt K" first="Kurt" last="Erdelt">Kurt Erdelt</name><name sortKey="Guth, Jan Frederik" sort="Guth, Jan Frederik" uniqKey="Guth J" first="Jan-Frederik" last="Güth">Jan-Frederik Güth</name><name sortKey="Happe, Arndt" sort="Happe, Arndt" uniqKey="Happe A" first="Arndt" last="Happe">Arndt Happe</name></noCountry><country name="Allemagne"><noRegion><name sortKey="Stimmelmayr, Michael" sort="Stimmelmayr, Michael" uniqKey="Stimmelmayr M" first="Michael" last="Stimmelmayr">Michael Stimmelmayr</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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