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Three‐Dimensional Measurement of Bone Loss at Implants in Patients With Periodontal Disease
Author(s) -
Kehl Marcus,
Swierkot Katrin,
Mengel Reiner
Publication year - 2011
Publication title -
journal of periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.036
H-Index - 156
eISSN - 1943-3670
pISSN - 0022-3492
DOI - 10.1902/jop.2010.100318
Subject(s) - aggressive periodontitis , medicine , dentistry , mandible (arthropod mouthpart) , periodontitis , chronic periodontitis , maxilla , orthodontics , biology , botany , genus
Background: The aim of this prospective study is to evaluate the three‐dimensional marginal bone level around implants 5 to 15 years after loading in partially edentulous patients treated for generalized chronic periodontitis (GCP) and generalized aggressive periodontitis (GAgP). Methods: Seventeen patients with GCP and 17 patients with GAgP were treated with a total of 119 implants. Patients were examined clinically on a 3‐month recall schedule after insertion of the superstructure, and radiographs were taken at fixed intervals. At the end of the observation period, cone‐beam computed tomography was used for the analysis of the circumferential three‐dimensional bone level (mesial, distal, buccal, and lingual/palatal) and determination of keratinized mucosa thickness (KMT). Results: In both groups, a significant bone loss at implants was observed buccally (GAgP group: 4.49 ± 2.93 mm; GCP group: 3.57 ± 2.94 mm) with significantly more average bone loss in patients with GAgP (3.00 ± 1.67 mm) compared to in patients with GCP (2.45 ± 1.08 mm). The lowest values for KMT in both groups were found in the anterior mandible (GAgP group: 0.99 ± 1.13 mm; GCP group: 0.82 ± 0.91 mm). There were significant correlations between clinical parameters and bone loss in mandibles of patients with GAgP. Conclusions: The lowest value for KMT in both groups was found in the mandible. Bone loss was observed buccally and was more pronounced in patients with GAgP, with a significant correlation with keratinized mucosa and increased inflammation.