Effectiveness of fiberglass glass bur, ultrasonic and manual mechanotherapy on grade II furcation involved mandibular molars (An in vivo comparative study)

Abstract

Background: Access to the molars furcation areas is especially difficult for thepatient and clinician alike due to the posterior location of molars, the dimensionand position of furcation entrances, and the internal furcation surfaces that arefrequently concave or irregularly contoured. The disparity between the size ofcommonly used scaling instruments and the size of the furcation entrance furthercomplicates the situation.Materials and Methods: Thirty grade II furcation involved first and secondmandibular molar teeth from seventeen patients. The clinical parameters thatwere measured included, Plaque index PI, Gingival index GI, Bleeding on probingBOP, Probing pocket depth PPD and Relative attachment level RAL. Thefurcation involved teeth included in the study were allocated in 3 groupsaccording to the type mechanical treatment used. GROUP A (GA) :10 teethtreated by hand instrumentation by gracey curette. GROUP B (GB): 10 teethtreated by fiberglass rotary burs. GROUP C (GC) : 10 teeth treated by ultrasonicscaler with special furcation tip. The clinical parameters were recorded at day (0)(baseline visit,) prior to surgical operations and repeated at (4 weeks), and (12weeks) after operations. Results: GROUP A, GB, and GC at (12 weeks) wererespectively as the following: PLI (1.28, 1.03 and 0.56), GI (0.97, 1.12 and0.60), BOP (37.88 %, 39.44 % and 11.66 %), PPD (3.11 mm, 2.8 mm and1.28 mm) and RAL (3.36 mm, 3.47 mm and 2.7 mm).Conclusions: GROUP C Ultrasonic scaler revealed the highly significant reductionin the clinical parameters. Followed by fiberglass burs and lastly by the curette.Also the three groups showed a highly significant reduction in all parameters asthe time interval progressed (4 weeks), and (12 weeks).