title: Correlation of bone defect dimensions with healing outcome one year after apical surgery.
abstract: This clinical study prospectively evaluated the healing outcome 1 year after apical surgery in relation to bony crypt dimensions measured intraoperatively. The study cohort included 183 teeth in an equal number of patients. For statistical analysis, results were dichotomized (healed versus non-healed cases). The overall success rate was 83% (healed cases). Healing outcome was not significantly related to the level and height of the facial bone plate. In contrast, a significant difference was found for the mean size of the bony crypt when healed cases (395 mm(3)) were compared with non-healed cases (554 mm(3)). In addition, healed cases had a significantly shorter mean distance (4.30 mm) from the facial bone surface to the root canal (horizontal access) compared with non-healed cases (5.13 mm). With logistic regression, however, the only parameter found to be significantly related to healing outcome was the length of the access window to the bony crypt.
authors.affiliation: Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Berne, Freiburgstrasse 7, CH-3010 Bern, Switzerland. thomas.vonarx@zmk.unibe.ch
authors.forename: Thomas
authors.initials: T
authors.lastname: von Arx
authors.forename: Stefan
authors.initials: S
authors.lastname: Hänni
authors.forename: Simon Storgård
authors.initials: SS
authors.lastname: Jensen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000539:Alveolar Process / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D002648:Child; D006801:Humans; D016015:Logistic Models; D008875:Middle Aged; D015588:Observer Variation; D011446:Prospective Studies; D011859:Radiography; D018709:Statistics, Nonparametric; D013997:Time Factors; D019227:Tooth Apex / Q000000981:diagnostic imaging / Q000601:surgery*; D016896:Treatment Outcome