Abstract
The introduction of microinstruments for root-end cavity preparation has clearly improved the surgical technique in periradicular surgery with apicectomy. The new generation of sonic and ultrasonic root-end preparation devices, usually termed 'retrotips', has simplified the preparation of a sufficiently deep cavity that follows the original path of the root canal. The present paper describes the use of a new set of diamond-surfaced retrotips driven by a sonic handpiece. For clinical evaluation a prospective study was carried out, with assessment of pre-, intra- and postoperative data in 50 teeth (43 patients). This paper analyses: (i) the applicability of the new retrotips; (ii) the quality of the root-end filling assessed radiographically; (iii) the immediate postoperative course. Access with the retrotips to the resected root-end was found to be excellent in 80% of the treated teeth. The postoperative radiographs showed a root-end filling of at least 3 mm in 70% of the resected teeth. Healing was uneventful in all cases and most patients presented without any symptoms after 5 days and 10 days. The long-term treatment outcome will be reported in a future paper.
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