Alveolar ridge preservation using xenogeneic collagen matrix and bone allograft.

Alveolar ridge preservation (ARP) has been shown to prevent postextraction bone loss. The aim of this report is to highlight the clinical, radiographic, and histological outcomes following use of a bilayer xenogeneic collagen matrix (XCM) in combination with freeze-dried bone allograft (FDBA) for ARP. Nine patients were treated after extraction of 18 teeth.

Clinical and microbiological effects of subgingival application of a chlorhexidine gel in chronic periodontitis. A pilot study.

Clinical and microbiological effects of subgingival application of a 1% chlorhexidine gel were studied. Eleven patients with chronic periodontitis participated in the study. In each patient two pairs of single rooted teeth with at least 20% attachment loss and probing depth > 4 mm were selected.

Correlation study of arterial blood pressure level to the amplitude of the pressure pulse waveform.

Automated blood pressure measurements are usually characterized by poor operational reliability and a considerable degree of complexity in performing the measurement. This paper introduces a new technique for the indirect measurement of the systolic and diastolic blood pressure of an individual. The technique is based upon a statistically consistent relationship between the amplitude of the pulsative pressure waveform at the systolic and diastolic points, and the amplitude of pulse signals detected when the artery is fully occluded.