Ridge alterations post-extraction in the esthetic zone: a 3D analysis with CBCT

Chappuis, Vivianne; Engel, Odette; Reyes, Mauricio; Shahim, K; Nolte, L-P; Buser, Daniel (2013). Ridge alterations post-extraction in the esthetic zone: a 3D analysis with CBCT. Journal of dental research, 92(12 Sup), 195S-201S. Sage 10.1177/0022034513506713

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Dimensional alterations of the facial bone wall following tooth extractions in the esthetic zone have a profound effect on treatment outcomes. This prospective study in 39 patients is the first to investigate three-dimensional (3D) alterations of facial bone in the esthetic zone during the initial 8 wks following flapless tooth extraction. A novel 3D analysis was carried out, based on 2 consecutive cone beam computed tomographies (CBCTs). A risk zone for significant bone resorption was identified in central areas, whereas proximal areas yielded only minor changes. Correlation analysis identified a facial bone wall thickness of ≤ 1 mm as a critical factor associated with the extent of bone resorption. Thin-wall phenotypes displayed pronounced vertical bone resorption, with a median bone loss of 7.5 mm, as compared with thick-wall phenotypes, which decreased by only 1.1 mm. For the first time, 3D analysis has allowed for documentation of dimensional alterations of the facial bone wall in the esthetic zone of humans following extraction. It also characterized a risk zone prone to pronounced bone resorption in thin-wall phenotypes. Vertical bone loss was 3.5 times more severe than findings reported in the existing literature.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB
04 Faculty of Medicine > School of Dental Medicine > Department of Oral Surgery and Stomatology

UniBE Contributor:

Chappuis, Vivianne; Engel, Odette; Reyes, Mauricio and Buser, Daniel

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health

ISSN:

0022-0345

Publisher:

Sage

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

17 Feb 2014 11:52

Last Modified:

11 Sep 2017 22:17

Publisher DOI:

10.1177/0022034513506713

PubMed ID:

24158340

Uncontrolled Keywords:

bone remodeling, bone resorption, clinical trial, dental implants, maxilla, three-dimensional imaging

BORIS DOI:

10.7892/boris.40393

URI:

https://boris.unibe.ch/id/eprint/40393

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