Single-session endodontic treatment of a lower first molar affected by endodontic and periodontal lesions: A case report.

• DOI: https://doi.org/10.22533/at.ed.8135425100715

• Palavras-chave: Endodontics, periodontics, single session.

• Keywords: Endodontics, periodontics, single session.

• Abstract: The correlation between pulp pathology and periodontal problems can arise due to the proximity of anatomy and vascularization between the pulp and periodontium, and due to existing communication pathways through neural structures. Endo- perio problems are more frequent in posterior teeth than in anterior teeth, due to the higher number of accessory canals present in these teeth. The objective of this work is to present a clinical case of single-session endodontic treatment of a first lower molar with an endo- perio lesion. A female patient went to the multidisciplinary clinic of Ceulp / Ulbra-To for a routine examination. In the anamnesis, she reported discomfort in tooth 36. The cold sensitivity and vertical percussion tests showed negative results, absence of tooth mobility, however, periodontal probing exceeded 10 mm of penetration. Radiographic examination revealed a radiolucent area circumscribing the periapical and periodontal region of the mesial root. The dental element was instrumented with the Prodesing S system, irrigated with 2.5% sodium hypochlorite ( NaOCl ), and the final irrigation was with 17% EDTA. The canals were dried and obturated using the continuous wave thermoplasticization technique. Follow-up of the endo/ perio lesion was performed for up to 8 months. During follow-up visits, the periodontal pocket was irrigated with 2% chlorhexidine gel and physiological saline, and periodontal scaling was performed. A reduction in the pathological process and regeneration in the periradicular and periodontal region were observed. It is possible to conclude that single-session endodontic treatment of a tooth with endodontic and periodontal lesions is feasible and yields good results.