Objectives:To evaluate the clinical response to S\RP aided by an endoscope over that of traditional S\RP Methods:Eight hundred and sixty four periodontal pockets were treated with traditional,non-endoscope aided S\RP and provided periodontal maintenance procedures (PMP) every three months for one year. These sites received further S\RP at one year with the aid of an endoscope designed specifically for this purpose. Six hundred and twenty six sites >5mm remained in the patient pool at the end of the first through third year. The same clinicians provided all therapy. The sites were provided traditional PMP for three additional years and data collected at 90-day intervals. No antibiotics or other drugs were administered to facilitate healing. Results: 1. Significantly additional reduction in PPD (2.25mm mean over traditional S\RP in all sites) 2.Significant gain in CAL (1.86mm all sites) 3. Improvement in CAL and PPD may continue up to 12 months 4.Results maintained for over 36 months with three-month PMP 5.furcations, maxillary bicuspids and distals of second molars did not generally respond as well 6. scaling and root planing with the aid of a dental endoscope requires significantly more time than traditional scaling and root planing. These observations are significant to p<.0001 Conclusions: Endoscope aided S\RP results in significant improvement in CAL and PPD over traditional S\RP.

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