Naslov
Thickness of the facial bone wall at teeth in the anterior maxilla – A radiographic study using Cone Beam Computed Tomography

Autori
Braut, Vedrana ; Bornstein, Michael M. ; Belser, urs ; Buser, Daniel

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
2. Međunarodni regionalni Straumann / Ivoclar Vivadent kongres za doktore dentalne medicine ’’Competence in Implant Esthetics’’

Mjesto i datum
Zagreb, Hrvatska, 24.09.2010. - 25.09.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Key words: dental implants; implant placement post extraction; risk factor; facial bone wall; Cone Beam Computed Tomography

Sažetak
Background and purpose: The purpose of this radiographic clinical study was to analyze the thickness of the facial bone wall at teeth in the anterior maxilla based on Cone Beam Computed Tomography (CBCT) images, since this anatomical structure is important for the selection of an appropriate treatment approach in patients with post-extraction implant placement. Methods: A total of 125 CBCTs met the inclusion criteria, resulting in a sample size of 498 teeth. The thickness of the facial bone wall in the respective sagittal scans was measured perpendicular to the long axis of the tooth at two locations: at the crest level, 4 mm apical to the cemento-enamel junction, and at the middle of the root. Results: No existing bone wall was found in 25.7% of all teeth at MP1 and in 10% at MP2. The majority of the examined teeth exhibited a thin facial bone wall (< 1 mm ; 62.9% at MP1 ; 80.1% at MP2). A thick bone wall (≥ 1 mm) was found in only 11.4% of all examined teeth at MP1 and 9.8% at MP2. There was a statistically significant decrease in the facial bone wall thickness from the first premolars to the central incisors. Interpretations: The present radiographic study clearly demonstrated that the facial bone wall in the crestal area of teeth in the anterior maxilla was either missing or thin in roughly 90%. Both, a missing and a thin facial wall require a simultaneous contour augmentation at implant placement due to the well-documented bone resorption of a thin facial bone wall following tooth extraction. Consequently, radiographic analysis of the facial bone wall using CBCT prior to extraction is recommended for the selection of the appropriate treatment approach.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

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