back to contentsClinical Evaluation ofGuided Tissue Regeneration Using a ExpandedPolytetrafluoroethylene Membrane
Tetsuo KOBAYASHI,Katsuya SAKURAI, Kazuhiro OKUDA, Futami ISHIHARA and Kohji HARA
Department of Periodontology, School ofDentistry, Niigata University
( Chief: Prof. Kohji HARA )
Abstract :
The purpose of this study is to evaluate the clinical effect ofthe guided tissue regeneration (GTR) technique using a expandedpolytetrafluoroethylene (ePTFE) membrane (Gore-Tex(I((B, GTRmembrane). Thirty two teeth in 27 periodontitis patients wereused for this study. After completion of the initial preparation,probing pocket depth (PPD) and clinical attachment level (CAL)were measured, as determined the use of GTR and baseline data.Following gingival flap elevation, scaling , root planing andremoval of granulation tissue on the periodontal defect sites,GTR membrane was placed and sutured. Gingival flap wasrepositioned and sutured tightly, so as to cover the membrane ascompletely as possible . After 4 to 6 weeks, the membrane wasremoved again and clinical assessment was repeated at 6 monthsfollowing surgery and compared with the baseline.
The results were as follows:
1. Class II furcation involvements (11 sites) showed asignificant vertical and horizontal PPD reduction (mean$B!^(BSD;vertical:1.5$B!^(B1.4mm, horizontal: 2.3$B!^(B1.0mm;p<0.01). They alsoshowed CAL gain at six months after GTR ( 0.9$B!^(B1.6mm).
2. Three-wall intrabony defects (21 sites) disclosed asignificant vertical PPD reduction (3.1$B!^(B1.7mm;p<0.01) and CALgain (2.2$B!^(B1.4mm;p<0.01).
3. The use of GTR produced significantly more CAL gain than flapsurgery alone.
These results suggest that GTR using a ePTFE membrane is veryeffective on treatment of both class II furcation involvement andthree-wall intrabony defect .