Vertical distortion in distal extension ridges and palatal area of casts made by different techniques.
Identifieur interne : 009F64 ( Main/Exploration ); précédent : 009F63; suivant : 009F65Vertical distortion in distal extension ridges and palatal area of casts made by different techniques.
Auteurs : H Y Wang [République populaire de Chine] ; Y C Lu ; Y Y Shiau ; D. TsouSource :
- The Journal of prosthetic dentistry [ 0022-3913 ] ; 1996.
Descripteurs français
- KwdFr :
- Alginates, Colloïdes, Conception d'appareil de prothèse dentaire (), Humains, Matériaux empreinte dentaire (), Modèles dentaires (normes), Mâchoire édentée (anatomopathologie), Prothèse dentaire partielle amovible, Reproductibilité des résultats, Siloxane élastomère, Technique de prise d'empreinte (instrumentation).
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Dental Impression Materials.
- chemical : Alginates, Colloids, Silicone Elastomers.
- instrumentation : Dental Impression Technique.
- methods : Denture Design.
- pathology : Jaw, Edentulous.
- standards : Dental Models.
- Denture, Partial, Removable, Humans, Reproducibility of Results.
Abstract
A coordinate measurement machine with laser probe was used to measure the vertical distortion of the casts produced by use of three types of impression materials (irreversible hydrocolloid, condensation silicone, and addition silicone) and two types of trays (stock and custom trays). Results indicated that all impression groups showed positive vertical distortion (ranging from 0.00566 to 0.30299 mm) at the edentulous ridges and palatal area. The amount of the vertical distortion was greatest at the palatal area and was followed by the high edentulous ridge and the low edentulous ridge. Addition silicone, with either custom tray or stock tray, was the most accurate impression material. Condensation silicone was more accurate than irreversible hydrocolloid in custom tray impression. However, in stock tray impression the irreversible hydrocolloid was more accurate than the condensation silicone. The results suggest that, with careful manipulation, irreversible hydrocolloid with stock tray impression may provide a satisfactory cast for fabricating the framework of a distal extension removable partial denture.
PubMed: 8648579
Affiliations:
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Le document en format XML
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<term>Dental Models (standards)</term>
<term>Denture Design (methods)</term>
<term>Denture, Partial, Removable</term>
<term>Humans</term>
<term>Jaw, Edentulous (pathology)</term>
<term>Reproducibility of Results</term>
<term>Silicone Elastomers</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Alginates</term>
<term>Colloïdes</term>
<term>Conception d'appareil de prothèse dentaire ()</term>
<term>Humains</term>
<term>Matériaux empreinte dentaire ()</term>
<term>Modèles dentaires (normes)</term>
<term>Mâchoire édentée (anatomopathologie)</term>
<term>Prothèse dentaire partielle amovible</term>
<term>Reproductibilité des résultats</term>
<term>Siloxane élastomère</term>
<term>Technique de prise d'empreinte (instrumentation)</term>
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<term>Colloids</term>
<term>Silicone Elastomers</term>
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<keywords scheme="MESH" qualifier="pathology" xml:lang="en"><term>Jaw, Edentulous</term>
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<keywords scheme="MESH" qualifier="standards" xml:lang="en"><term>Dental Models</term>
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<term>Reproducibility of Results</term>
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<term>Colloïdes</term>
<term>Conception d'appareil de prothèse dentaire</term>
<term>Humains</term>
<term>Matériaux empreinte dentaire</term>
<term>Prothèse dentaire partielle amovible</term>
<term>Reproductibilité des résultats</term>
<term>Siloxane élastomère</term>
<term>Technique de prise d'empreinte</term>
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<front><div type="abstract" xml:lang="en">A coordinate measurement machine with laser probe was used to measure the vertical distortion of the casts produced by use of three types of impression materials (irreversible hydrocolloid, condensation silicone, and addition silicone) and two types of trays (stock and custom trays). Results indicated that all impression groups showed positive vertical distortion (ranging from 0.00566 to 0.30299 mm) at the edentulous ridges and palatal area. The amount of the vertical distortion was greatest at the palatal area and was followed by the high edentulous ridge and the low edentulous ridge. Addition silicone, with either custom tray or stock tray, was the most accurate impression material. Condensation silicone was more accurate than irreversible hydrocolloid in custom tray impression. However, in stock tray impression the irreversible hydrocolloid was more accurate than the condensation silicone. The results suggest that, with careful manipulation, irreversible hydrocolloid with stock tray impression may provide a satisfactory cast for fabricating the framework of a distal extension removable partial denture.</div>
</front>
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<name sortKey="Tsou, D" sort="Tsou, D" uniqKey="Tsou D" first="D" last="Tsou">D. Tsou</name>
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