Abstract— Effects of endodontic retreatment on quality of seal and periapical healing were assessed among 660 previously root‐filled roots. The roots were divided into either of two groups according to presence or absence of pathologic alterations in the periapical area. The retreatments, which were carried out by dental students, involved a thorough chemomechanical debridement of the root‐canal system aiming to control infection. Following a 2‐year observation period 556 roots were reexamined clinically and radiographically. The results showed that root‐fillings with technical shortcomings could, following retreatment, be markedly improved as regards effectiveness of seal and distance to the apex. A large number of lumina discernible apical to root‐filling could also be treated and filled. Seventy‐eight percent of the cases with pathologic lesion present periapically prior to retreatment either completely healed or displayed an obvious size‐reduction of the process Retreatments carried out because of technical inadequacies alone were successful in 94% of the cases. It was concluded that renewed endodontic treatment whenever possible is the method of choice when treating defective endodontic fillings complicated with pathologic processes periapically. Apical surgery may be attempted if no signs of healing are apparent following observation.

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The purpose was to survey attitudes towards management of chronic orofacial pain (COP). Questionnaires were mailed to 30 randomized dentists and to 30 consecutive COP patients, examined 16 months earlier by a pain group of dental specialists. Fifty-seven per cent of the patients reported that their pain was the same as or worse than before and was disturbing. Few were dissatisfied with the examinations. Fifty-nine per cent thought that the consultations had been good. The surveyed dentists judged the most common causes of COP to be neurogenic and psychogenic in origin; they were overwhelmingly positive to the idea of a pain group (93%) and could consider referring patients (97%). Pain-inducing local diseases occurred but were not dominant among these COP patients. We concluded that management of COP in a pain group appears to be meaningful, as reflected by the respondents' attitudes but would gain by a closer collaboration with medical expertise.

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