IADR Abstract Archives
SEM Characteristics After Different Instrumentation Modalities
Objectives: Root surface instrumentation is an integral part of periodontitis treatment. Recent years different devices are introduced aiming the endpoint of clean and smooth root surface that favor periodontal healing. However, their potential to damage or modificate the root surfaces is still controversial.
The aim of the present study is to evaluate the morphology of root surfaces after instrumentation with 4 different modalities - hand curettes, Er:YAG laser, ultrasonic and polishing device.
Methods: 10 freshly extracted incisors due to advanced periodontitis are randomly divided in 5 groups. The root surfaces of each group are instrumented with: Gracey curettes (Hu Friedy Mfg. Co., LLC) - group A; Er:YAG laser (Lite Touch, Light Instruments LTD) - group B; ultrasonic device (Piezon Master 400, E.M.S.) - group C; and ultrasonic device combined with subgingival polishing with erythritol (AIRFLOW®Prophylaxis Master, E.M.S.) - group D. Two teeth remained for control. Teeth are prepared for morphological evaluation with scanning electron microscope (JEOL, JSM-6390).
Results: The SEM micrographs demonstrate deep surface scratches, remnants of biofilm and smear layer after hand instrumentation. Group B - Er:YAG laser, reveals microrough, but very clean surface with exposed collagen fibres. Root surfaces instrumented with ultrasonic device (group C) are smooth but demonstrate some biofilm remnants. In group D - subgingival polishing with erythritol and ultrasonic scaling, root surfaces are smooth and without biofilm or smear layer.
Conclusions: With the limitation of the present study it could be concluded that different modalities for root surface instrumentation could be recommended in different clinical situation (and root anatomy) and at different phases of the periodontal therapy. Subgingival polishing and ultrasonic scaling with slim tips seem to provide clean and smooth surface without surface damage which could be beneficial for long-term care of initial and moderate periodontitis.
The aim of the present study is to evaluate the morphology of root surfaces after instrumentation with 4 different modalities - hand curettes, Er:YAG laser, ultrasonic and polishing device.
Methods: 10 freshly extracted incisors due to advanced periodontitis are randomly divided in 5 groups. The root surfaces of each group are instrumented with: Gracey curettes (Hu Friedy Mfg. Co., LLC) - group A; Er:YAG laser (Lite Touch, Light Instruments LTD) - group B; ultrasonic device (Piezon Master 400, E.M.S.) - group C; and ultrasonic device combined with subgingival polishing with erythritol (AIRFLOW®Prophylaxis Master, E.M.S.) - group D. Two teeth remained for control. Teeth are prepared for morphological evaluation with scanning electron microscope (JEOL, JSM-6390).
Results: The SEM micrographs demonstrate deep surface scratches, remnants of biofilm and smear layer after hand instrumentation. Group B - Er:YAG laser, reveals microrough, but very clean surface with exposed collagen fibres. Root surfaces instrumented with ultrasonic device (group C) are smooth but demonstrate some biofilm remnants. In group D - subgingival polishing with erythritol and ultrasonic scaling, root surfaces are smooth and without biofilm or smear layer.
Conclusions: With the limitation of the present study it could be concluded that different modalities for root surface instrumentation could be recommended in different clinical situation (and root anatomy) and at different phases of the periodontal therapy. Subgingival polishing and ultrasonic scaling with slim tips seem to provide clean and smooth surface without surface damage which could be beneficial for long-term care of initial and moderate periodontitis.