J. W. Wittwer

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The primary purpose of this study was to document mean, standard deviation, and range of root trunk dimensions of multirooted tooth types. A total of 412 extracted teeth were examined and classified as: maxillary first molars, maxillary second molars, maxillary first premolars, mandibular first molars, and mandibular second molars. The distance from the(More)
Twelve patients with 2 Miller Class I or II buccal recession defects measuring > or = 3.0 mm were treated using the principles of guided tissue regeneration and followed for 12 months. The effectiveness of a polylactide (Guidor) resorbable membrane (GA sites) was compared to a combination treatment of polylactide membrane plus polyglactin root-lining mesh(More)
Twelve patients with isolated alveolar ridge defects bordered by teeth on each side were treated and followed for 12 months. The treatment involved use of a resorbable membrane and a particulate graft without complete flap closure. Measurements taken at 12 months showed a significant mean osseous gain of 3.27 +/- 3.73 mm in mid-defect ridge width and an(More)
Reliability methods are probabilistic algorithms for quantifying the effect of uncertainties on response metrics of interest. In particular, they compute approximate response function distribution statistics (probability, reliability, and response levels) based on specified probability distributions for input random variables. In conjunction with simulation(More)
Standardized terminology does not exist to differentiate the conditions that constitute "response diagnosis" and "disease diagnosis" described in this review. Therefore, appropriate descriptive terminology is proposed for these two periodontic diagnoses. Diagnostic terms are needed to discern stages of disease. Periodontitis is a chronic disease prone to(More)
BACKGROUND Previous reports in the literature have shown that non-steroidal anti-inflammatory drugs (NSAID) may affect osseous tissues by either stimulating or inhibiting bone formation. This effect can be drug specific and different NSAIDs may produce opposite results. There are also reports showing that NSAIDs inhibit bone loss due to inflammatory disease(More)