Petra Ratka-Krüger

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BACKGROUND This study clinically evaluates the 10-year results of connective tissue graft (CTG) and guided tissue regeneration (GTR) therapies using bioabsorbable barriers for root coverage (i.e., the reduction of recession depth). METHODS In 15 patients, 38 Miller Class I and II recessions were treated. Recession defects received a CTG or GTR by random(More)
OBJECTIVE To measure directly the thickness of the palatal mucosa using sharp cannulas and to evaluate potential correlations with gender and body mass index (BMI). METHOD AND MATERIALS Thirty-three participants (19 women) 23 to 41 years of age (27.8 +/- 4.1) were examined. Mucosal thickness from maxillary left canine to left second molar was measured at(More)
Connective tissue grafts (CTGs) are generally viewed as the most successful technique for root coverage. The aim of this retrospective study was to assess the long-term clinical and patient-centered esthetic results of the envelope technique for CTG. Thirty-nine defects in 20 patients (22 to 57 years of age; mean 37.8 +/- 11.5 years) had received CTG that(More)
AIM Evaluation of the clinical effect of topical application of doxycycline adjunctive to non-surgical periodontal therapy. METHODS A total of 111 patients suffering from untreated or recurrent moderate to severe periodontitis at 3 different centers (Heidelberg, Frankfurt, Nijmegen) were treated in this double-blind split-mouth study. In each patient, 3(More)
AIM Claims are being made that clinical results of periodontal flap surgery are enhanced when membranes are employed to aid GTR in intrabony pockets. It was the aim of our study to determine whether this assumption was true for a certain bioresorbable membrane (Guidor Matrix Barrier). METHOD 44 intrabony defects were treated in 16 patients. In 21 lesions,(More)
BACKGROUND With the help of so-called controlled release delivery systems, the half-life period of locally administered antibiotics in gingival crevicular fluid (GCF) can be extended significantly. The aim of this study was to characterize the delivery profile of a new one-component 14% doxycycline free amine gel for local application. Pharmacokinetics of(More)
INTRODUCTION For the production of computer-based learning environments, a wide range of software solutions can be used which differ not only in their functionality but also vary in cost and ease to program. The aim of our study was to evaluate the overall efficiency and student's perception of two case-based e-learning programs that were produced with(More)
AIM To evaluate patient compliance rates and influential factors regarding a systematic SIT program. MATERIALS AND METHODS Between 2005 and 2008, we identified all patients who were provided with implant-supported restorations in the study centre. They had been recommended to attend a SIT program with a 3-month recall. In 2012, a clinical retrospective(More)
OBJECTIVE To assess the subjective intensities of pain during supportive periodontal treatment using a sonic scaler or an Er:YAG laser. MATERIAL AND METHODS Forty patients with two residual periodontal pockets following conventional periodontal therapy were treated using a sonic scaler and an Er:YAG laser in a split-mouth design. A visual analogue scale(More)
BACKGROUND Long-ranging data on the influence of keratinized mucosa (KM) on peri-implant tissue status have been scarce. PURPOSE Retrospective evaluation of peri-implant diseases and KM width in patients with versus without mucogingival surgery. MATERIALS AND METHODS Under supportive postimplant therapy (SIT) in a private practice, 68 patients with(More)