Early implant placement with simultaneous guided bone regeneration following single-tooth extraction in the esthetic zone: a cross-sectional, retrospective study in 45 subjects with a 2- to 4-year follow-up

Buser, Daniel; Bornstein, Michael M; Weber, Hans Peter; Grütter, Linda; Schmid, Bruno; Belser, Urs C (2008). Early implant placement with simultaneous guided bone regeneration following single-tooth extraction in the esthetic zone: a cross-sectional, retrospective study in 45 subjects with a 2- to 4-year follow-up. Journal of periodontology, 79(9), pp. 1773-81. Chicago, Ill.: American Academy of Periodontology 10.1902/jop.2008.080071

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BACKGROUND: The concept of early implant placement is a treatment option in postextraction sites of single teeth in the anterior maxilla. Implant placement is performed after a soft tissue healing period of 4 to 8 weeks. Implant placement in a correct three-dimensional position is combined with a simultaneous guided bone regeneration procedure to rebuild esthetic facial hard and soft tissue contours. METHODS: In this retrospective, cross-sectional study, 45 patients with an implant-borne single crown in function for 2 to 4 years were recalled for examination. Clinical and radiologic parameters, routinely used in implant studies, were assessed. RESULTS: All 45 implants were clinically successful according to strict success criteria. The implants demonstrated ankylotic stability without signs of a peri-implant infection. The peri-implant soft tissues were clinically healthy as indicated by low mean plaque (0.42) and sulcus bleeding index (0.51) values. None of the implants revealed a mucosal recession on the facial aspect as confirmed by a clearly submucosal position of all implant shoulders. The mean distance from the mucosal margin to the implant shoulder was -1.93 mm on the facial aspect. The periapical radiographs showed stable peri-implant bone levels, with a mean distance between the implant shoulder and the first bone-implant contact of 2.18 mm. CONCLUSIONS: This retrospective study demonstrated successful treatment outcomes for all 45 implants examined. The mid-term follow-up of 2 to 4 years also showed that the risk for mucosal recession was low with this treatment concept. Prospective clinical studies are required to confirm these encouraging results.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > School of Dental Medicine > Department of Oral Surgery and Stomatology
UniBE Contributor:	Buser, Daniel Albin, Bornstein, Michael, Grütter, Linda-Maria, Schmid, Bruno, Belser, Urs Christoph
ISSN:	0022-3492
Publisher:	American Academy of Periodontology
Language:	English
Submitter:	Eveline Carmen Schuler
Date Deposited:	04 Oct 2013 15:02
Last Modified:	02 Mar 2023 23:22
Publisher DOI:	10.1902/jop.2008.080071
PubMed ID:	18771381
Web of Science ID:	000259346600023
URI:	https://boris.unibe.ch/id/eprint/26751 (FactScience: 87915)