Five-year results following regenerative periodontal surgery with an enamel matrix derivative in patients with different smoking status.

Objective: To evaluate the five-year results following regenerative periodontal surgery of intrabony defects using an enamel matrix derivative (EMD) in patients with different smoking status.

Method And Materials: The dental records of patients treated with regenerative periodontal surgery with EMD between 2001 and 2011 were screened. The clinical parameters at baseline (T0) and 6 months (T1) and 5 years (T2) after surgery were collected and analyzed in relation to patient's smoking status (smokers, former smokers, and nonsmokers).

[Results of arthroscope studies of knee joint effusions of unknown origin].

174 knee joints with non-traumatic effusion have been examined by arthroscopy. In 71 cases synovial biopsy was performed. 43% of the knees had cartilaginous damage of the patella or tibiofemoral joint, 19% had an old meniscal and/or ligamentous tear and 33% a "non-specific" synovitis.