Contemporary Clinical Dentistry最新文献

This article outlines the orthodontic treatment of a 21-year-old female patient with an open bite and temporomandibular joint disorders (TMDs) that developed after a severe car accident. The treatment plan utilized temporary anchorage devices (TADs) for upper molar intrusion to correct the open bite without resorting to orthognathic surgery. Over a period of 3 years, the treatment achieved a stable occlusion, normalized molar relationships, and improved esthetics. Despite the persistent of TMD symptoms, the patient experienced enhanced jaw movement and a reduction in abnormal chewing cycles. The combination of orthodontic treatment with TADs and splint therapy contributed to successfully restoring both esthetic and functional aspects. This case underscores the efficacy of TADs in addressing trauma-induced malocclusions, highlighting the potential for minimal intervention to achieve comprehensive treatment outcomes.

Adenomatoid odontogenic tumors (AOT), first described by Steensland in 1905, are benign, slowly enlarging, nonaggressive, odontogenic epithelial neoplasms comprising 3%-7% of all odontogenic tumors. They tend to originate from the dental lamina remnants or the reduced enamel epithelium. Mutation at codon 12 of KRAS oncogene (Kirsten rat sarcoma viral oncogene homolog) plays a pivotal role in the pathogenesis. AOTs demonstrate three clinicopathological spectrums, namely follicular, extrafollicular, and peripheral. The extrafollicular AOTs are hypothesized to originate from a stimulus triggering the dental lamina remnants. While intraosseous follicular AOTs are fairly common (70.8%), the extrafollicular counterparts are infrequent (24%), and novel entities that may mimic other lesions due to the absence of tooth inside. Herein, we elucidate a series of five unique extrafollicular AOT cases with a relevant emphasis on its pathogenesis and clinico-radiological aspects. This report aims to add another significant record to the literature pertaining to the compilation of extrafollicular AOTs.

In the field of clinical training, entrustable professional activities (EPAs) generally deal with those activities that health-care professionals will be encountering in their routine practice, and thus exposure to these activities prepares them for their future clinical practice. Workplace-based assessment tools have been used to assess the progress of medical students across these defined EPAs. The act of development of EPAs essentially requires the adoption of a systematic process to identify and define the core tasks and responsibilities that medical students must be able to perform independently in a specific specialty. The process of integration of EPAs into the medical school curriculum essentially requires systematic planning and implementation to ensure that students get an adequate number of opportunities to develop and demonstrate the desired competencies. In conclusion, EPAs provide an excellent framework for transforming medical education by preparing medical students to be ready for the complexities of health-care delivery.

Dental students often prefer social media for its accessibility and low cost but must critically evaluate the content before applying it in practice. This study analyzed YouTube content on socket shielding. A new Google account was created to search for "Socket Shield Technique" and "Partial Extraction Therapy." Eligible videos were assessed for quality using the Global Quality (GQ) tool and the DISCERN tool. Statistical analysis was performed using the Statistical Package for the Social Sciences software. Results showed an average of 28.35 likes per video, no dislikes, and substandard content indicated by a DISCERN score of 25.25 ± 2.4 and a GQ score of 1.82 ± 0.38. The study concludes that video content on socket shielding is not reliable, emphasizing the importance of clinical observation and hands-on practice.

Introduction: There is a scarcity of studies in which both alveolar bone remodeling and root resorption are simultaneously assessed and compared against possible influencing factors such as rate of retraction and change in inclination. The aim of our study was to assess the changes in the alveolar bone thickness and root length of the maxillary anterior teeth after retraction and correlate it to the potential influencing factors, namely rate of retraction and change in inclination.

Subjects and methods: Ten patients requiring upper premolar extraction as part of their treatment were included in the study. Alveolar bone and root length changes were measured using cone beam computed tomography and the rate of retraction and change in inclination were assessed using lateral cephalograms. Two readings: Preretraction and postretraction were taken. Statistical analysis was done using Paired rank t-test and Spearman's rank correlation tests. Significance level was set at P < 0.05.

Results and conclusions: The labial alveolar bone thickness showed an increase, whereas the palatal and total alveolar bone thickness showed a decrease. Root resorption was observed in all teeth. Alveolar bone changes showed a positive correlation to the rate of retraction and a negative correlation to the change in inclination. The root length change showed a positive correlation to the change in inclination.

Fibrous histiocytoma is a benign soft-tissue neoplasm that commonly involves the dermis. It is rare in the oral cavity. This lesion creates a diagnostic dilemma due to its nonspecific clinical appearance and microscopic similarities with other benign fibrous tissue lesions. Microscopically, it shows the proliferation of both spindle-shaped fibroblasts and histiocytes. Surgical excision is the treatment of choice with a good prognosis. The purpose of this paper is to report a rare case of gingival benign fibrous histiocytoma occurring in an 11-year-old female patient. The diagnosis of this lesion is based on combined clinical, histopathological, and immunohistochemical features.

Objectives: The present study evaluated hard- and soft-tissue changes in immediate implants using flapless approach with and without demineralized freeze-dried bone allograft (DFDBA) clinically and radiographically using cone-beam computed tomography (CBCT).

Materials and methods: Thirty-two sites in patients requiring immediate implants in the maxillary anterior region including the premolars were grouped according to the treatment provided with (test group) or without (control group) DFDBA. Plaque index, probing depth, soft-tissue assessment using Testori Esthetic Score (TS), and ridge width were recorded at baseline and postoperatively at 6 and 12 months, while crestal bone height (CBH), buccal bone thickness (BBT), jump space (JS), and gingival thickness were evaluated using CBCT at baseline and 12 months.

Results: Considerable differences among the different time lines and the groups in favor of the test group were prominently seen on the midfacial aspects at 12 months, with CBH values of -0.28 ± 0.17 mm in the test group as compared to -0.78 ± 0.34 in the control group (P < 0.0001). The JS was maximum on the buccal aspects being 1.42 ± 0.87 mm in the test group and 1.12 ± 0.81 mm in the control group which reduced at 12 months to 0.13 ± 0.35 mm and 0.73 ± 0.79 mm, respectively.

Conclusion: Immediate implants with DFDBA augmentation using a flapless protocol demonstrated reduced CBH with resolution of JS and increased BBT, especially at the coronal aspects which influence the tissue stability and overall esthetics.

Background: There is a high failure rate of endodontic treatment in the mandibular incisors due to insufficient knowledge of the morphology.

Aim: The aim of this study was to analyze the root canal morphology in mandibular incisor teeth in the North Indian subpopulation to improve the outcome of endodontic treatment.

Setting and design: A cross-sectional study was conducted at the OPD of a tertiary care institute.

Materials and methods: A total of 200 mandibular central incisors and 200 mandibular lateral incisors were selected from available cone-beam computed tomography examinations of 100 patients aged 18-79 years. They were evaluated for root canal system configuration and symmetry between right and left elements in the same individual.

Statistical analysis: Chi-square/Fisher's exact test was used to find the association between different study variables.

Results: For mandibular central incisors, type I Vertucci classification was present in 69% of cases, type II in 3.5%, type III in 18.5%, type IV in 2%, and type V in 7% of cases. For mandibular lateral incisors, type I was present in 70.5% of cases, type II in 4% of cases, type III in 19.5%, type IV in 2%, and type V in 4% of cases. There was no evidence of types VI, VII, and VIII. Symmetry of root canal morphology between left and right teeth was observed in 90% of central incisors and 93% of lateral incisors.

Conclusion: Type I Vertucci configuration was the most prevalent; however, the prevalence of other configurations is also evident. Therefore, endodontists should explore the morphology of these teeth carefully while performing root canal treatments.

Masson's tumor is a benign intravascular lesion of proliferating endothelial cells that accounts for 2% of vascular and subcutaneous lesions. It manifests clinically as a bluish swelling, resembling a mucocele or hemangioma. Intravascular papillary endothelial hyperplasia (IPEH) was coined by Clearkin and Enzinger in 1976 to describe reactive vascular expansion, following traumatic vascular stasis mimicking angiosarcoma. Clinically, this condition manifests as a bluish enlargement resembling a mucocele or hemangioma. We reported a rare case of IPEH located on the upper lip in an 18-year-old female. A diagnosis of IPEH was reported based on the histopathological findings of papillary proliferating endothelial cells with engorged red blood cells. There was no evidence of recurrence after 6 months of follow-up.

The objective is to minimize the inaccuracies in two-step impressions by homogenizing the polymerization shrinkage of elastomeric impression material in fixed prosthesis fabrication. The objective is accomplished by the technique of spacer adaptation and custom tray fabrication for two-step impressions. The technique makes the use of two vacuum-adapted spacers, selected based on the viscosity of elastomeric impression, and a vacuum-adapted custom tray. The procedure of using the specially fabricated custom tray for impression making is also presented. Consistent thickness of the two different viscosities of impression material is maintained due to vacuum adaptation of the spacers. This homogenizes the polymerization shrinkage of the elastomeric material in different regions of impression, as uniform space is occupied by the material in the space created by the spacer. The procedure of vacuum adaption of the tray material also limits the dimensional change of the tray. The technique minimizes the inaccuracies of impression by homogenizing the polymerization shrinkage of the elastomeric impression, thus promising a well-fitting prosthesis.