"Biologic width"and crestal bone remodeling with sintered porous-surfaced dental implants: a study in dogs.

"Biologic width"and crestal bone remodeling with sintered porous-surfaced dental implants: a study in dogs. Research Abstract Details 

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"Biologic width"and crestal bone remodeling with sintered porous-surfaced dental implants: a study in dogs. Abstract Text:

PURPOSE: The aim of this study was to obtain histometric measurements of bone and peri-implant mucosal tissue contact with implants of 2 sintered porous-surfaced designs. The "short-collar" design had a collar height (smooth coronal region) of 0.75 mm, while the "long-collar" model had a smooth coronal region of 1.8 mm. MATERIALS AND METHODS: Implants (2 per side) were placed in healed mandibular extraction sites of 4 beagle dogs using a submerged technique. After 4 weeks of healing, they were uncovered and used to support fixed partial dentures for a 9-month period. After sacrifice, specimens were retrieved and nondemineralized sections were examined histometrically to determine the most coronal bone-to-implant contact (first BIC) using the microgap as a reference and standard mucosal parameters of "biologic width." RESULTS: Significant (P = .001) differences in first BIC were found between designs (1.97 mm for long-collar versus 1.16 mm for short-collar implants) for posteriorly located implants but not for anteriorly located ones (1.21 mm versus 1.38 mm; P = .40). If crestal bone loss involved sintered surface, fibrous connective tissue ingrowth was observed to replace lost bone. No significant differences in peri-implant mucosal measurements (total peri-implant mucosal thickness; length of the epithelial component of this mucosa, and thickness of the connective tissue component) were detected between implant designs. CONCLUSIONS: Results suggest that "biologic width" accommodation drives initial crestal bone loss with sintered porous-surfaced implants. Histometric data obtained for bone contact showed no significant differences between the long- and short-collar implant designs.

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PUBMED ID PMID:

MEDLINE DATE: 2008 May-Jun

"Biologic width"and crestal bone remodeling with sintered porous-surfaced dental implants: a study in dogs. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: The International journal of oral & maxillofacial

VOLUME: 23

Page Numbers: 544-50

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ISSN: 0882-2786

DAY: 14

MONTH: 08

YEAR: 2008

"Biologic width"and crestal bone remodeling with sintered porous-surfaced dental implants: a study in dogs. Information

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LANGUAGE: eng

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AFFILIATION: Department of Periodontics, University of Toronto, Faculty of Dentistry, Toronto, Ontario, Canada. douglas.deporter@utoronto.ca

Country: United States

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MEDLINETA: Int J Oral Maxillofac Implants

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