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Paper Information

Journal:   ACTA MEDICA IRANICA   2014 , Volume 52 , Number 9; Page(s) 697 To 702.
 
Paper: 

IS BIOLOGIC WIDTH OF ANTERIOR AND POSTERIOR TEETH SIMILAR

 
 
Author(s):  RASOULI GHAHROUDI AMIR ALIREZA, KHORSAND AFSHIN*, YAGHOBEE SIAMAK, HAGHIGHATI FARIDEH
 
* DEPARTMENT OF PERIODONTOLOGY, FACULTY OF DENTISTRY, TEHRAN UNIVERSITY OF MEDICAL SCIENCES, TEHRAN, IRAN
 
Abstract: 

The biologic width (BW) includes attached epithelial cells and connective tissue attachment complex being very important in the periodontal health during prosthetic treatments as invading this zone can cause bone resorption and gingival recession. The present study investigated biologic width values in the normal periodontium in anterior and posterior teeth.30 patients that referred from restorative department to periodontics department of Tehran University of medical sciences who need crown lengthening procedure on their teeth with no history of orthodontic, prosthodontic and periodontal treatment were randomly enrolled in this cross-sectional trial. Sulcus depths (SD) as well as the distance between free gingival margin and the bone crest (FB) of anterior and posterior teeth were measured by UNC-15 probe and compared. periodontium thickness was also assessed. The data were subjected to Student t test. Mean BW in the 43 anterior and 47 posterior teeth was measured and not significantly different (1.4651±0.39 mm vs.1.6312±0.49 mm) was observed, however, BW was significantly more in the teeth with thick periodontium compared to those with thin periodontium (1.703±0.5 vs.1.408±0.35, P=0.002). BW not only is different in individuals but also could be dissimilar in different teeth and should be calculated independently prior to restorative treatments.

 
Keyword(s): GINGIVA, BIOLOGIC WIDTH, RESTORATION MARGIN, ATTACHED GINGIVAE, TOOTH, TOOTH PREPARATION, PROSTHODONTIC
 
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