Journal of Contemporary Dental Practice最新文献

Aim: To assess and compare the soft tissue profile and dentoalveolar changes associated with bimaxillary distalization to those associated with first premolar extraction.

Methods: This was an ambidirectional, cohort study comprising of 40 subjects between 18 and 30 years of age of either gender, with well-aligned arches and incisor proclination. They were divided equally into two groups - group A underwent fixed orthodontic treatment with bimaxillary distalization and group B were treated by first premolar extraction with moderate anchorage. Changes in ANB, incisor inclination, molar distalization, and extrusion, as well as nasolabial angle and lip retraction, were assessed using pre- and posttreatment lateral cephalograms. Intra and intergroup comparisons were carried out by paired and independent tests, respectively. The threshold for statistical significance was set at p < 0.05.

Results: Both groups showed significant improvements in the soft tissue profile and dentoalveolar values posttreatment. In group A, favorable changes in incisor inclination, lip retraction, and the nasolabial angle were observed, which were found to be statistically significant. Similar changes were observed in group B, in addition to a change in the ANB angle. On comparing treatment outcomes between the groups, statistically significant differences were seen in the mandibular plane angle, upper and lower incisor inclinations, and upper lip retraction (p = 0.005).

Conclusion: The changes produced by both treatment modalities were favorable with significant improvements. Although the changes seen in group A were slightly lesser than those seen in group B, they were comparable.

Clinical significance: To extract or not to extract has always been a dilemma orthodontists face, especially in borderline cases. The advent of extraradicular screws has largely simplified this problem since full arch distalization is now possible. This approach is particularly beneficial for patients hesitant about extractions or when extractions might undesirably flatten the facial profile. Considering the dearth of evidence, this study was taken up to compare treatment outcomes of a conventional premolar extraction approach vs a non-extraction approach with full arch distalization. The findings offer valuable insights for practitioners to make evidence-based treatment decisions. How to cite this article: Sanman R, Desai A, Natarajan S, et al. An Ambidirectional Cohort Evaluation of Soft Tissue and Dentoalveolar Changes after Orthodontic Treatment with Bimaxillary Distalization vs First Premolar Extraction. J Contemp Dent Pract 2025;26(7):699-704.

Aim: This case report aims to highlight the application of a computed tomography (CT)-guided, digitally designed workflow for implant-retained auricular prosthetic rehabilitation in a patient with traumatic ear loss.

Background: Implant-retained auricular prostheses require highly precise implant positioning for optimal retention and esthetics. Advances in virtual surgical planning, combined with radiographic imaging and implant planning software, now enable a prosthetically driven, patient-specific approach.

Case description: A 45-year-old male with right auricular loss from childhood trauma reported dissatisfaction with an adhesive-retained prosthesis due to poor retention and skin irritation. Clinical evaluation confirmed adequate bone and healthy surrounding tissue, thus planned for implant-retained prosthetic rehabilitation. A CT-guided digital workflow was employed, using a custom 3D-printed surgical guide with intraoral occlusal support and an external auditory canal plug for accurate implant placement in the mastoid region. Peri-implant soft tissue was managed through debulking, split-thickness skin grafting, and a stent-supported healing protocol. A CAD-designed, stereolithography-printed three-piece negative mold was used to fabricate a wax pattern and a color-matched silicone prosthesis secured to a custom metal bar. The patient was instructed on hygiene maintenance to preserve soft tissue health. Patient acceptance of the prosthesis was found to be favorable, with positive feedback regarding both esthetic integration and functional comfort, which further supports the efficacy of implant-supported facial prostheses in restoring quality of life following orofacial rehabilitation.

Conclusion: This case highlights the effectiveness of a CT-based digital workflow in improving the precision and clinical outcomes of implant-retained auricular prostheses. The integration of a modified 3D surgical guide and custom negative mold offers a patient-specific, accurate, and reproducible approach for complex auricular rehabilitation, significantly enhancing prosthesis retention, esthetics, and patient satisfaction.

Clinical significance: This case underscores the value of a CT-based digital workflow and customized 3D-printed tools in achieving precise implant placement and superior prosthetic outcomes in auricular reconstruction. By integrating anatomical references like the external auditory canal into the surgical guide and employing a custom negative mold for prosthesis fabrication, clinicians can enhance retention, soft tissue health, and esthetic results. How to cite this article: Ajay Y, Vijayamohan M, Krishnadas A, et al. Digital Workflow for Implant-retained Auricular Prosthesis Using Modified 3D Surgical Guide and Negative Mold: A Case Report. J Contemp Dent Pract 2025;26(7):710-715.

Aim: To evaluate and compare the shear bond strength (SBS) and adhesive remnant index (ARI) scores of four different orthodontic bracket system bonded to fluorosed enamel surfaces using two color-changing adhesive materials.

Materials and methodology: The sample consisted of 48 extracted human premolar teeth with fluorosis, intended for orthodontic purposes. These were divided into two groups: group I and group II, each comprising 24 samples. Group I samples were bonded with Ormco Grengloo, while group II samples were bonded with 3M Transbond XT Plus. Each group was further subdivided into four subgroups of six samples each, based on the type of brackets used: subgroup A - metal conventional brackets (CBs), subgroup B - metal self-ligating brackets (SLBs), subgroup C - ceramic CBs, and subgroup D - ceramic SLBs. Prior to bonding, all teeth were thermocycled 500 times. The brackets were then debonded using a universal testing machine at a crosshead speed of 1 mm/min. The debonding force was applied in the occlusogingival direction and recorded in Newtons. Statistical comparison of the bond strengths among subgroups was carried out using the ANOVA test.

Results: The analysis revealed a material- and bracket-type-dependent variations in SBS. In group I, subgroup B exhibited the highest SBS, while subgroup C showed the lowest. In group II, subgroup D demonstrated the highest SBS, whereas subgroup A had the lowest. These differences were statistically analyzed using ANOVA, confirming significant variation based on both adhesive type and bracket configuration.

Conclusion: These findings suggest that SLBs, both metal and ceramic, generally provide stronger bonds compared to CBs, regardless of the adhesive used. Ormco Grengloo adhesive appears to be more effective for bonding metal CBs and metal SLBs, while Transbond XT Plus excels in bonding ceramic CBs and ceramic SLBs.

Clinical significance: This study helps orthodontists choose the best bracket-adhesive combinations for fluorosed teeth, improving bond strength, reducing treatment delays, and making bonding easier with color-changing adhesives. It supports personalized treatment, better bracket retention, and fewer bond failures in patients with enamel fluorosis, making orthodontic care more effective and efficient. How to cite this article: Goswami M, Wadhawan A, Nagar S, et al. Evaluation of Shear Bond Strength of Orthodontic Brackets with Color-changing Adhesives on Fluorosed Teeth: A Randomized Clinical Trial. J Contemp Dent Pract 2025;26(7):652-657.

Aim: To evaluate dentinal defect development, this study compared three rotary systems used for root canal preparation, namely ProTaper Next (PTN), 2Shape, and Reciproc.

Materials and methods: Sixty first mandibular molars with two separated canals were selected and included in this study. The samples were divided into four groups (n = 15): Control, PTN, 2Shape, and Reciproc. The control group was left unprepared, and the remaining 45 samples were prepared using these three systems. The samples were sectioned perpendicular to the long axis at 3, 6, and 9 mm from the apex. Each slice was examined under a stereomicroscope at 20× magnification to evaluate the presence of dentinal defects. The images were analyzed using ImageJ software, and the data were assessed statistically using the Chi-square and Fisher's exact tests.

Results: No cracks were observed in the control group. ProTaper Next, 2Shape, and Reciproc groups caused cracks development in 24, 11, and 40% of the samples, respectively. Reciproc system caused significantly more cracks at 3 mm level (p < 0.05). No statistically significant difference was observed among groups at the 6 and 9 mm levels (p > 0.05).

Conclusion: All three rotary file systems examined produced dentinal cracks, particularly at the apical third. ProTaper Next and 2Shape tend to produce fewer cracks compared to Reciproc.

Clinical significance: Although all motion kinematics tested in this study caused some degree of dentinal crack formation, the Reciproc system (R25) demonstrated a more destructive effect in the apical third of the root canal. In contrast, the PTN and 2Shape 25/0.06 systems were found to be safer options for root canal preparation in the mesial roots of first mandibular molars. How to cite this article: Nasiri K, Doychinova M, Wrbas KT. Comparative Evaluation of Dentinal Crack Formation Using Three Ni-Ti Rotary Systems after Root Canal Preparation: An In Vitro Study. J Contemp Dent Pract 2025;26(7):663-667.

Aim: This study aims to devise a comprehensive objective rubric to better facilitate radiographic skills assessment for students and enhance the assessment's impact on the performance, competency, and standards of clinical practice.

Materials and methods: The study population will include 10 clinical experts in dental radiography and 50, 4th year Bachelor of Dental Surgery students. Research will be carried out in multiple phases (11) and will include literature review, expert consultation, rubric construction, and pilot testing. The validation of the rubric will be analyzed using the modified Delphi technique and construct validity, inter-rater reliability, and students' acceptability of the rubric. Data will be analyzed using Statistical Package for Social Sciences software with a significance level of less than 5%. The analysis will involve determining the content validity index, the face validity index, exploratory factor analysis for construct validity, Cronbach's alpha for internal consistency, and inter-rater reliability using Cohens' kappa statistic and intraclass correlation coefficient.

Conclusion: This study explores rubric use in dental radiography education, aiming to standardize assessment, enhance feedback, improve student skills, and guide future research for better education and patient care outcomes.

Clinical significance: The need for this study arises from the lack of a standardized, objective, and comprehensive tool to assess dental radiography skills in undergraduate students. Current assessment methods are inconsistent and subjective, leading to variability in evaluating student competence. This study aims to establish a standardized, objective rubric to enhance accuracy and consistency in assessing dental radiography skills, ultimately improving student competence, feedback quality, and patient care outcomes. How to cite this article: Gondivkar SM, Panchbhai A, Gadbail AR, et al. Development of a Comprehensive Rubric for Assessing Dental Radiography Skills in Undergraduate Dental Students: Study Protocol. J Contemp Dent Pract 2025;26(7):658-662.

Aim: The purpose of the present study was to examine the efficacy of 3 various local drugs delivery methods in the treatment of peri-implantitis.

Materials and methods: Forty-five participants with peri-implantitis cases were included in this investigation. All participants were randomly allotted to the following groups with fifteen subjects in each group, group I: Subjects with chlorhexidine chip placement, group II: Subjects with tetracycline (TC) fibers placement, group III: Subjects with minocycline microspheres placement. Plaque index (PI), gingival index (GI) and probing depth (PD) measurements were recorded at the time of screening, 1st month and 3rd months postintervention. Data gathered was statistically analyzed.

Results: Mean gingival score at baseline and 3rd month were 1.82 ± 0.01 and 0.92 ± 0.12 for group I, 1.74 ± 0.02 and 0.84 ± 0.16 for group II and 1.78 ± 0.14 and 0.98 ± 0.06 for group III respectively. In group I the mean plaque score at baseline and third month were 1.90 ± 0.03 and 0.98 ± 0.12, group II were 1.86 ± 0.04 and 0.94 ± 0.02, group III were 1.80 ± 0.04 and 1.04 ± 0.16. The mean PD at baseline and third month were 5.30 ± 0.02 and 4.74 ± 0.06 in group I, 5.42 ± 0.02, 1st month was and 4.18 ± 0.08 for group II, and 5.26 ± 0.02 and 4.36 ± 0.09 in group III. There was a highly significant difference found (p < 0.001).

Conclusion: Within the limitations of this study, TC fibers group was superior in improving GI, PI and PD scores and effective in peri-implantitis management than chlorhexidine chip and minocycline microspheres group.

Clinical significance: One benefit of using local delivery agents (LDA) is that they can transport large concentrations of antibiotics to the intended locations. However, their effectiveness can be limited by the continuous flow of saliva and gingival crevicular fluids. Longer implant retention is associated with a higher prevalence rate of peri-implantitis. Therefore, an effective modality to manage peri-implantitis is necessary owing to the fact that the number of implants is ever-increasing. How to cite this article: Sahoo N, Nedumgottil BM, Chakraborty S, et al. Efficacy of Different Local Drug Delivery Systems in the Management of Peri-implantitis: An In Vivo Study. J Contemp Dent Pract 2025;26(7):683-687.

Aim: The current study aimed to evaluate the effectiveness of conventional and technology-based oral health education (OHE) tools in the improvement of periodontal health.

Materials and methods: A total of 400 patients who required scaling and root planing were selected by the simple random sampling technique. All participants were divided into four groups, i.e., 100 participants in each group based on the inclusion criteria, group I: Conventional group, group II: Receiving model demo-based OHE, group III: Receiving video-based OHE mode, and group IV: Receiving app-based reminders as the OHE mode. The gingival index (GI), Quigley-Hein Turesky modification index (QHTMI), and oral hygiene index score (OHI-s) were used to capture baseline data once the scaling was finished. On the 7th, 21st, 90th, and 180th days, all data were repeated.

Results: On comparison of mean plaque index score, in model demo group, the maximum reduction score found was 2.72 ± 0.14 on 90th day, in video-based OHE group was 1.72 ± 0.04 on 90th day, and in app-based reminder group was 2.16 ± 0.26 on 180th day. On comparison of mean GI score, in model demo group, the maximum reduction found was 1.96 ± 0.06 on 180th day, in video-based OHE group was 1.40 ± 0.08 on 90th day, and in app-based reminder group was 1.90 ± 0.06 on 90th day. On comparison of mean OHI-s, in model demo group, the maximum reduction found was 1.54 ± 0.44 on 180th day, in video-based OHE group was 0.98 ± 0.01 on 90th day, and in app-based reminder group was 1.08 ± 0.08 on 21st day. The significant association was found in video-based OHE and app-based reminder groups.

Conclusion: The present study concluded that video-based and app-based OHE significantly improve overall periodontal health compared to model demo-based and conventional group.

Clinical significance: An essential oral health issue on a global scale is the increased incidence of periodontal disorders. Preventing periodontal diseases requires raising public awareness of the condition and influencing attitudes toward it. Nonetheless, one of the main preventative strategies is OHE. Oral health education programs with recognized technology, such as video-based, app-based, model-based, and traditional lecture-based methods, could be strategic in promotion of oral health behavior of the individuals. How to cite this article: Mishra D, Jalaluddin M, Singh DK, et al. Evaluation of the Effectiveness of Conventional and Technology-based Oral Health Education Tools in the Improvement of Periodontal Health. J Contemp Dent Pract 2025;26(7):688-692.

Aim: To evaluate the solubility of bioceramic-coated and conventional gutta-percha (GP) in various organic and traditional solvents at two time intervals.

Materials and methods: This in vitro study used 200 ISO-standardized size 35, taper 6% GP cones (100 bioceramic-coated, 100 conventional), divided into five solvent groups: xylene, orange oil, castor oil, peppermint oil, and distilled water (control). Cones were immersed for 5 and 10 minutes. Pre- and postimmersion weights were measured using a digital weighing balance at two different time intervals, and the difference was used to assess solubility.

Results: Xylene demonstrated the highest solubility for both GP types. Orange oil was moderately effective on bioceramic-coated cones, while castor and peppermint oils showed minimal effect. For conventional GP, solvent efficacy followed the order: orange oil > peppermint oil > castor oil.

Conclusion: Xylene remains the most effective solvent, though its toxicity raises concerns. Organic solvents, particularly orange oil, offer safer alternatives, but their effectiveness varies with the type of GP.

Clinical significance: Solubility differences between bioceramic-coated and conventional GP impact retreatment efficiency. While xylene remains most effective, orange oil provides a biocompatible alternative, particularly effective against conventional GP, supporting safer and more targeted solvent selection in clinical practice. How to cite this article: Arora T, Dahiya S, Khandelwal S, et al. Decoding Dissolution-Solubility Comparison of Bioceramic-coated and Conventional Gutta-percha Cones across Solvents and Two Different Time Intervals: An In Vitro Study. J Contemp Dent Pract 2025;26(7):639-644.

Aim: The present study aimed to determine the implant mobility, bleeding on probing, and marginal bone level after immediate implant placement with or without platelet-rich fibrin (PRF) in the anterior esthetic zone.

Materials and methods: The present study included forty patients aged between 18 and 45 years. Patients were allocated into two groups: Group I: Control group (n = 20): Patients who had immediate implant placement without PRF, group II: Test group (n = 20): Patients who had immediate implant placement with PRF. Immediately before the procedure, PRF preparation for the test group proceeded. Implant insertion was performed right after following tooth extraction. To evaluate the effectiveness of immediate implant placement with or without PRF, the clinical parameters such as implant mobility, bleeding on probing, and marginal bone level were measured at baseline, 3 months, and 6 months. Data was recorded and statistically analyzed.

Results: Implant mobility in the third month was three (15%) and one (5%), and in the sixth month was four (20%) and two (10%) in control and test group, respectively. In the control group, at baseline, bleeding on probing was 1.10 ± 0.06; it increased at the sixth month to 1.42 ± 0.02. In the test group, at baseline, bleeding on probing was 1.08 ± 0.01; it increased at the sixth month to 1.26 ± 0.04. In the control group, in the third month mean marginal bone level was 0.58 ± 0.08 and 0.60 ± 0.10, and in the sixth month, 0.64 ± 0.01 and 0.72 ± 0.06 in the control and test group, respectively. There was a significant difference found at the third and sixth months between the groups.

Conclusion: The present study concluded that immediate implant placement with the PRF group showed better improvement in implant mobility, bleeding on probing, and marginal bone level.

Clinical significance: Platelet-rich fibrin progressively releases substantial amounts of thrombospondin-1 and growth factors. PRF is considered a healing biomaterial that uses circulating stem cells to stimulate key elements of soft and osseous tissue repair, such as angiogenesis and immunological regulation. In order to promote the healing process at the surgical site, PRF is crucial in the esthetic zone. How to cite this article: Awasthi N, Sonkesriya S, Samal SK, et al. A Clinical Evaluation of Immediate Implant Placement with/without PRF in Anterior Esthetic Zone. J Contemp Dent Pract 2025;26(7):679-682.