New Zealand dentists' use of gingival retraction techniques for fixed prosthodontics and implants.
Gingival retraction techniques for implants versus teeth.
A new method of gingival retraction for impression taking in fixed prosthesis.
Contrary to the above mentioned results, use of gingival retraction methods by Pakistani dentists appears to be rather low.
The questions were closed - ended and aimed to assess the prevalence of use of gingival retraction techniques and the impediments that prevented its routine use by dentists.
In response to questions about the use of gingival retraction methods, 51.4% dentists "agreed" that gingival retraction is necessary to provide optimal dental restorations esp.
A search of the literature on PubMed and Google Scholar reveals that most of the articles published globally on gingival retraction techniques are in vitro studies or studies comparing the efficacy of various retraction techniques.2,5,7,11,12 There is a lack of data reporting the practice of dentists regarding gingival retraction method.
About 74% of the dentists preferred retraction cords to achieve gingival retraction. This finding is endorsed by the results of Rath et al9 who reported the use of retraction cords as the preferred retraction technique by majority (> 55%) of Irish dentists.
Tear resistance of the impression material can be affected by the material thickness.6 Gingival retraction should be mandatory prior to impression so as to expose the prepared tooth sur-faces.7-8 Impression with less sulcular width have higher incidences of voids, tearing of impression materials, and reduction in marginal accuracy.9-10 Occasionally, gingival retraction is required in order to permit the completion of tooth preparation or to allow cementa-tion of laboratory-manufactured restorations.11 A num-ber of studies have been done on the various materials and methods used for gingival retraction.7
According to a 1985 survey, 95% of North American dentists routinely used gingival retraction cords.12 There are approximately 125 gingival retraction cords in various shapes, sizes and medications available in the market.
Gingival retraction - techniques and materials: A review impregnated with 100% alum.
According to Benson et al17, gingival retraction measures fall into one of four major categories: (1) simple mechanical methods, (2) chemo-mechanical methods, (3) rotary gingival curettage, and (4) electro-surgical methods.