Alternative Approach to Gingival Retraction | 合法醫療器材資訊網
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2019年1月10日—Incasesinvolvingdeeperpreparationmargins,theimpression...Anytimeretractioncordisutilized,however,thereisariskfor ...
![Alternative Approach to Gingival Retraction](https://i.imgur.com/6y29Lx7.jpg)
Consider this gingival retraction technique for exposing crown margins during fixed prosthodontic impressions
Gingival retraction techniques to expose crown preparation margins have been well documented in the literature.1–5 During impression procedures, effective gingival retraction is required to capture accurate preparation margins and the tooth structure apical to them. The fit of the planned restoration hinges on the accuracy of this impression, from which fixed prosthodontic restorations can be fabricated that exhibit marginal accuracy and an appropriate emergence profile.
While many factors contribute to inaccurate impressions, a common problem relates to how well the clinician captured the prepared margin finish line,6 especially with subgingival or equigingival margins. In cases involving deeper preparation margins, the impression material must resist displacement from the ging...
7 Steps to Using Retraction Cord When Making an Impression ... | 合法醫療器材資訊網
Alternative Approach to Gingival Retraction | 合法醫療器材資訊網
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