Aims: To describe the non-surgical endodontic management of a maxillary first molar with severe, symptomatic external inflammatory root resorption in an adolescent patient, and to report the 12-month outcome. Presentation of Case: A 15-year-old boy presented with spontaneous pain and marked tenderness to percussion in the maxillary right first molar (tooth 16). A periapical radiograph showed advanced external resorption, most severe in the palatal and distobuccal roots, which had become considerably shortened. Root canal treatment was started without delay. Because the resorptive tissue was richly vascularised, controlling intracanal bleeding was difficult and time-consuming despite the short canals. After haemostasis was achieved, a dense calcium hydroxide dressing was placed in all canals. Three weeks later, the patient was almost free of symptoms, and the dressing was intact with no sign of infection. As the lesion was an external inflammatory resorption, each canal was then obturated along its full length with mineral trioxide aggregate (MTA). Discussion: Early diagnosis, elimination of the microbial stimulus, and a calcium hydroxide dressing are central to arresting inflammatory resorption. Full-length MTA obturation was chosen to seal the resorptive communications and to provide a well-sealing, biocompatible barrier in the weakened roots. Conclusion: Prompt endodontic intervention with calcium hydroxide followed by MTA obturation arrested the resorption and preserved the tooth, which remained asymptomatic and functional at the 12-month review.

Background: Fiber post removal during endodontic retreatment is challenging since fiber posts bond strongly to root dentin, closely matching its color, making the post–cement–dentin interface difficult to distinguish. Consequently, fiber post retrieval may cause unnecessary dentin loss and leave residual material within the canal. There is limited information on whether different visual-guidance approaches influence tissue preservation during fiber post removal. This study aimed to evaluate the effects of different visual-guidance approaches (×2.5 surgical loupes, a dental operating microscope, and fluorescence-assisted magnification with ReVeal™) on tissue preservation and material-removal performance during fiber post removal. Methods: Previously seated fiber posts were removed from 35 single-rooted extracted human teeth under a standardized ultrasonic protocol, varying only the imaging conditions: control/naked eye (K), ×2.5 loupes (L), ×6.9 dental operating microscope (M), and ×2.5 loupes with integrated 405 nm fluorescence (R) (ReVeal). Three-dimensional analyses were performed on pre- and postoperative micro-CT datasets. Volumetric dentin loss, residual resin cement in the post space, and remaining dentin thickness (RDT; mesial and distal measurements 1–6 mm from the post tip) were calculated. Two-way repeated-measures ANOVA with Greenhouse–Geisser correction, Welch tests, and Kruskal–Wallis tests were used; reliability was confirmed with the intraclass correlation coefficient. Results: Post removal caused significant dentin loss in all groups ( p < 0.001). Magnification groups (L, M, R) showed lower RDT loss when compared to the control group while no significant difference was detected among L, M, and R groups ( p > 0.05). No significant difference was observed among the four groups in terms of residual material ( p = 0.056); in an exploratory pairwise comparison, fluorescence-assisted magnification was associated with significantly fewer remnants than the loupe group ( p < 0.05). RDT decreased at all levels, most markedly in the 2–4 mm band ( p < 0.001). Tooth-structure loss on the mesial surface exceeded that on the distal surface ( p < 0.001); this asymmetry was notably reduced in the microscope group ( p > 0.05). Conclusions: Magnification (loupes/microscope) contributed to tissue preservation during fiber post removal, while the fluorescence-assisted approach was associated with lower residual resin cement, mainly relative to loupes. Microscope use facilitated more centered and symmetric tissue removal along the root-canal axis. As this was an in vitro study, these findings require confirmation in clinical settings.

Bu eser, endodontik tedavi görmüş dişlerin restorasyonunu tedavinin tamamlayıcı değil belirleyici aşaması olarak ele almakta; kökten korona bütünlüğünü doku koruma, materyal seçimi, adeziv simantasyon, ferrule yönetimi ve endokron uygulamaları ekseninde kanıta dayalı biçimde incelemektedir.Temel savı, endodontik ve restoratif aşamaların birbirinden bağımsız iki uygulama alanı değil, aynı tedavi bütünlüğünün ayrılmaz parçaları olduğudur. Kanaldaki biyolojik başarı, koronal sızdırmazlığın sağlanamadığı koşullarda riske girmekte; koronal restorasyonun kalitesi ise kanalın uzun dönem kaderini doğrudan belirlemektedir. Geleneksel yaklaşımın tam kron ve kanal içi post odaklı anlayışının aksine, güncel stratejiler minimum madde kaybıyla maksimum fonksiyonel çıktıyı hedeflemektedir. Minimal invaziv felsefeyi merkeze alan kitap; kalan diş dokusunun miktarı ve kalitesi, ferrule kavramının klinik sınırları, post endikasyonunun güncel kriterleri, endokronların biyomekanik avantajları, adeziv simantasyonun incelikleri ve oklüzal yüklerin restorasyon ömrü üzerindeki etkisini bütüncül bir akışla ele almaktadır. Klinisyenlere her vakada en konservatif, en öngörülebilir