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In vivo validation of a three-dimensional optical method to document volumetric soft tissue changes of the interdental papilla


Strebel, J; Ender, A; Paqué, F; Krähenmann, M; Attin, T; Schmidlin, P R (2009). In vivo validation of a three-dimensional optical method to document volumetric soft tissue changes of the interdental papilla. Journal of Periodontology, 80(1):56-61.

Abstract

BACKGROUND: Non-surgical and surgical periodontal treatment may cause volumetric changes in the gingival contour. Many techniques have been suggested to minimize soft tissue shrinkage; however, there is a lack of three-dimensional (3D) quantitative data comparing different treatment approaches. The aim of the present study was to clinically validate an easy-to-use chair-side procedure to document volumetric changes in the interdental papilla region. METHODS: Nine volunteers participated in the study. A thin layer of a flowable composite resin material was applied on a papilla and volumetrically analyzed using the clinical chair-side computer-aided design/computer-aided machining (CAD/CAM) 3D method. To accurately measure the applied volumes, the composite resin volume was also determined using microcomputed tomography (micro-CT) and weight measurements. In addition, inter- and intraexaminer differences were evaluated in the same manner using a dental training unit (phantom head) to simulate clinical conditions. RESULTS: No statistically significant difference was found between the results obtained by micro-CT and the weight measurements. The CAD/CAM 3D method showed a significant underestimation of the composite resin volume (P = 0.0047) compared to micro-CT, although the two methods correlated well (R(2) = 0.991). High accuracy was found when inter- and intraexaminer differences were evaluated, showing a concordance correlation coefficient of 0.99. CONCLUSION: CAD/CAM 3D device and software are an easy-to-use chair-side method to document changes in soft tissues.

BACKGROUND: Non-surgical and surgical periodontal treatment may cause volumetric changes in the gingival contour. Many techniques have been suggested to minimize soft tissue shrinkage; however, there is a lack of three-dimensional (3D) quantitative data comparing different treatment approaches. The aim of the present study was to clinically validate an easy-to-use chair-side procedure to document volumetric changes in the interdental papilla region. METHODS: Nine volunteers participated in the study. A thin layer of a flowable composite resin material was applied on a papilla and volumetrically analyzed using the clinical chair-side computer-aided design/computer-aided machining (CAD/CAM) 3D method. To accurately measure the applied volumes, the composite resin volume was also determined using microcomputed tomography (micro-CT) and weight measurements. In addition, inter- and intraexaminer differences were evaluated in the same manner using a dental training unit (phantom head) to simulate clinical conditions. RESULTS: No statistically significant difference was found between the results obtained by micro-CT and the weight measurements. The CAD/CAM 3D method showed a significant underestimation of the composite resin volume (P = 0.0047) compared to micro-CT, although the two methods correlated well (R(2) = 0.991). High accuracy was found when inter- and intraexaminer differences were evaluated, showing a concordance correlation coefficient of 0.99. CONCLUSION: CAD/CAM 3D device and software are an easy-to-use chair-side method to document changes in soft tissues.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic for Preventive Dentistry, Periodontology and Cariology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:January 2009
Deposited On:01 Feb 2010 17:02
Last Modified:05 Apr 2016 13:44
Publisher:American Academy of Periodontology
ISSN:0022-3492
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:10.1902/jop.2009.080288
PubMed ID:19228090
Permanent URL: http://doi.org/10.5167/uzh-27294

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