Background/Objectives: Pre-eruptive intracoronal resorption (PEIR) in impacted or unerupted teeth often remains undiagnosed. The aim of this study was to investigate the prevalence of PEIR with the aid of cone beam computed tomography (CBCT) and propose a new three-dimensional (3D) classification for the analysis of the lesions. Methods: A total of 164 unerupted teeth diagnosed in CBCT scans, derived from an equivalent number of patients, were examined for the presence of PEIR, tooth type, angulation and position. A novel 3D classification system was proposed and all PEIR lesions were further classified. The classification system was used to stage PEIR lesions according to their extend from the enamel level apically, the circumferential spread and their proximity to the pulp chamber. Descriptive statistics were used to assess the prevalence and type of resorption. The association between PEIR, demographics, tooth type, position and angulation were studied. The estimation of the multivariate relationship between PEIR, patient’s demographics and tooth characteristics was conducted with the multiple binary logistic regression model. Results: The prevalence of PEIR was 33.5%, affecting mostly maxillary canines, and maxillary and mandibular molars. The prevalence of PEIR in ages over 45 years was significantly higher (p < 0.001). The presence of PEIR was significantly associated with buccal position (p = 0.002) and buccal angulation (p = 0.016) of the tooth. Conclusions: Due to the high prevalence of PEIR, CBCT may improve detection and 3D characterization when imaging is already clinically indicated, and influence treatment planning in selected cases.

Cardiac arrest is a leading cause of death; timely intervention with basic life support (BLS) is crucial for healthcare providers, including dentists. This study aimed to assess awareness, educational level, and knowledge regarding the application of BLS and the use of an automated external defibrillator (AED) among dentists in Greece. A cross-sectional survey using an online questionnaire was conducted to collect demographic data, knowledge of BLS/Advanced Life Support (ALS), and experience in managing medical emergencies in dental practices. The results were statistically analysed, with the level of significance set at P < 0.05. Overall, the national response rate among Greek dentists was 2.5%. A total of 354 dentists across Greece participated in the study. Attendance at CPR/AED courses was recorded for 67.5% of participants, while 29.4% reported holding active certification. A small proportion of the surveyed dentists had an AED in their dental practices (8.5%), and 47.4% did not possess a self-injectable adrenaline. Syncope was the most common medical emergency during dental procedures (50.3%). Dentists who attended BLS training sessions demonstrated more appropriate practice in managing medical emergencies (P < 0.05). Continuous training and ongoing professional development for dentists are essential for effectively handling medical emergencies. This study promotes a more proactive approach to enhancing competency in emergency care and the appropriate management of medical emergencies in dental practices.

To investigate the diagnostic and therapeutic approaches applied by dentists for the management of symptomatic cracked teeth, and the evaluation of factors that influence clinical decision-making. An international cross-sectional study was conducted using an electronic multiple-choice questionnaire. The questionnaire was assessed for content validity by a panel of six experts and for reliability by a test-retest procedure in 20 dentists. A total of 427 fully completed questionnaires were collected from dentists practicing in Greece, the United Kingdom and other European countries. The questionnaire included demographic data, questions related to the diagnosis and treatment of cracked teeth, and four clinical scenarios. Statistical analysis was performed using descriptive and multivariate methods, at a level of statistical significance P < 0.05. The majority of participants reported experiencing 1-5 cases of cracked teeth per month. History taking (79.5%), use of magnifying devices (79.5%), clinical examination (75.9%), and tooth slooth bite test (69.6%) were the most frequently used diagnostic methods. Most participants associated cracked teeth with bruxism or occlusal disorders (95.2%) and with the presence of metal restorations (92.4%). Variability in treatment options was observed across clinical scenarios, particularly in cases of uncertain prognosis. Periodontal burden emerged as the most important factor influencing the choice of extraction, increasing the possibility of this treatment decision (P < 0.001). The use of CBCT was not associated with changes in diagnosis or treatment planning (P < 0.05). The management of symptomatic cracked teeth showed significant heterogeneity among dentists. The periodontal status of the tooth was the most important prognostic and treatment determinant, while clinical experience influenced decision-making in complex cases. The findings suggest that diagnostic accuracy can be achieved through traditional tools, whilst CBCT did not affect decision-making and treatment planning. Variations in the management of symptomatic cracked teeth highlight the need for evidence-based clinical guidelines to achieve greater uniformity and promote a more consistent, predictable clinical approach to decision-making. Periodontal status remains the critical factor for the survival of cracked teeth, necessitating extraction over complex restoration in cases of high periodontal burden.

Parastyle is a rare dental morphological trait characterised by an accessory cusp or tubercle, often found unilaterally on the buccal surface of the mesiobuccal cusp, mainly in the second and third maxillary molars. Its size may range from a small enamel pit to an independent, well‐developed cusp. When clinically present, parastyle may cause complications such as dental caries and sensitivity, localised periodontal disease and occlusal interference. This uncommon anatomical feature may further predispose to diagnostic and treatment challenges when pulp and periapical disease are established. In this case report, a rare second maxillary molar with a parastyle was diagnosed with pulp necrosis and apical periodontitis. Cone‐beam computed tomography was pivotal in addressing the anatomical complexity of the internal root and root canal morphology, particularly regarding the pulp space and the location of the root canal orifices beneath the parastyle. With regard to the efficiency of endodontic management, emphasis was placed on the diagnostic and anatomical challenges posed by such unusual and complex features, as well as on the need for an advanced disinfection regimen. This was addressed with magnification, modern endodontic instrumentation, irrigation and activation techniques, the use of interappointment dressing and root filling with gutta‐percha and a calcium silicate sealer. After 24 months, radiographic follow‐up confirmed a reduction in the size of the periapical lesion, and the tooth was asymptomatic and functional.

Dental restorative resins available today still have limitations that may affect their durability. This study explores reinforcing a universal microhybrid dental composite resin with organomodified nanoclay at low filler loadings (0, 0.5, 1, 3, and 5 wt%). The morphology, structural features, and light transmittance of the composites were analyzed using scanning electron microscopy (SEM), X-ray diffraction (XRD), attenuated total reflection–Fourier transform infrared (ATR–FTIR), and UV–Vis spectroscopy. The degree of conversion and polymerization shrinkage were measured with ATR–FTIR and a linear variable displacement transducer (LVDT). Water sorption and solubility parameters and flexural properties were assessed gravimetrically and with a dynamometer, respectively. The composites mainly showed exfoliated structures and an improved degree of conversion. Polymerization shrinkage and solubility were lower than those of unmodified dental resin. The highest degree of conversion was observed in composites with 0.5–1 wt% nanoclay. The incorporation of 1 wt% nanoclay resulted in the lowest shrinkage and sorption, along with the highest flexural modulus and strength. Overall, the results suggest that low nanoclay concentrations can improve the physicochemical and mechanical properties of dental composites, highlighting their potential to develop advanced restorative materials that can address current clinical challenges.