General dentistry最新文献

{"title":"Zirconia resin-bonded fixed partial denture with countersunk holes: a pilot study.","authors":"David G McMillan, Tyler Peterson, Gerald Greenan, Joel Janis","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The purpose of this pilot study was to evaluate the reten¬tion and durability of zirconia resin-bonded fixed partial dentures (RBFPDs) with countersunk holes in the wings for replacing single anterior teeth. It was hypothesized that the countersunk holes would increase retention. Patients were selected from the dental clinic at Roseman University of Health Sciences College of Dental Medicine, South Jordan, Utah. To be included in the study, patients were missing a central or lateral incisor and had both proximal abutment teeth. The abutment teeth had to be noncarious and have no existing restorations. The RBFPDs consisted of zirconia frameworks with 1 to 3 countersunk holes in the wings and porcelain-fused-to-zirconia pontics. The final prostheses were bonded with light-curing composite resin. Patients were followed up through email, text, and in-person appointments. Of 9 RBFPDs fabricated, 5 remained bonded to the abutment teeth at 3.8, 6.5, 6.5, 6.0, and 3.8 years, for an overall survival rate of 55.6%. A total of 4 RBFPDs debonded at 11 months and 5.1, 5.8, and 6.1 years. In the pros¬thesis that debonded at 5.1 years, a wing fractured at the countersunk holes. Countersunk holes in wings did not enhance retention compared with rates previously reported in the literature for zirconia RBFPDs without countersunk holes. However, the holes appeared to make the wings more susceptible to fracture under long-term occlusal stresses. Case selection, prosthetic design, the patient's occlusal forces, wing thickness, surface area, and operator technique are factors that affect the long-term bonding of zirconia RBFPDs.</p>","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 4","pages":"38-43"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144484025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of ambient light viewing conditions on imaging diagnosis of simulated internal root resorption in different devices.","authors":"Ludmila Santos Palma, Daniel Adrian Silva Souza, Fernanda Bulhões Fagundes, Laise Fernandes Tourinho, Frederico Sampaio Neves, Taruska Ventorini Vasconcelos","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The objective of this in vitro study was to analyze the influence of ambient lighting on the detection of simulated internal root resorption in images viewed on different digital devices. A total of 26 extracted single-rooted human teeth were sectioned longitudinally, and each half was coated with red enamel, leaving a 2-mm-diameter area exposed on the internal root surface. After the halves were rejoined with utility wax, the teeth were divided into 2 groups (n = 13) and submerged in 37% hydrochloric acid for different periods to create type 1 (2 hours) and type 2 (3 hours) resorption defects. Digital periapical radiographs were acquired before sectioning, after sectioning, and after simulation of resorption and then assessed by 3 experienced radiologists on 3 types of digital devices (27-inch desktop computer, 9.7-inch tablet computer, and 6.1-inch smartphone) under 2 lighting conditions (well-lit [427- to 461-lux] and darkened [0.0- to 15.5-lux]). Each image set was judged for the presence or absence of resorption using a 5-point scale. Sensitivity, specificity, and area under the receiver operating characteristic curve (A_z) values for the diagnoses were analyzed through 1-way analysis of variance (significance level of 5%). Overall, the tests yielded high sensitivity, specificity, and A_z values for all devices and lighting conditions. For simulated type 2 lesions, the sensitivity and specificity values were similar for well-lit and dark environments, except for the tablet device, which showed slightly reduced sensitivity and specificity without illumination, and the smartphone, whose specificity also had a lower value in this condition. These differences were not statistically significant. There was no statistically significant difference between different devices and lighting conditions regardless of the size of the resorption (type 1, P = 0.495; type 2, P = 0.520). Under the conditions of this study, ambient lighting and different devices did not influence the diagnosis of internal root resorption, allowing for flexibility in diagnostic conditions.</p>","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 4","pages":"21-26"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144484016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bilingual interactions: challenges faced by dental providers and interpreters at a pediatric dental clinic.","authors":"David O Danesh, Vanessa Short, Homa Amini","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The purpose of this qualitative study was to investigate the challenges and conflicts faced by dental providers and interpreters during bilingual pediatric dental encounters. Investigators recruited 6 professional Spanish and Nepali medical interpreters and 11 pedi¬atric dentists or residents to participate in one-on-one, semistructured, open-ended interviews about their experiences and challenges during bilingual pediatric dental visits. The interviews were audio recorded and transcribed. Constant comparative analysis was used to identify themes related to provider-interpreter interactions in a pediatric dental setting from the data transcripts. Dental providers identified several challenges associated with the interpretation process: miscommuni¬cation between the provider and interpreter; misunder¬standing the other's (provider's and interpreter's) role and boundaries; and not knowing if the interpretation was correct. Interpreters also identified some challenges in these interactions: miscommunication between the provider and patient; the provider did not seem respect¬ful of the patient; and the patient and provider had significant cultural differences in their way of handling illness information. Dental providers and interpreters can utilize these results and key takeaways to improve dental care for pediatric patients. Awareness of the challenges associated with bilingual pediatric dental encounters and developing strategies to alleviate conflicts will lead to improved quality of care and experiences for patients, interpreters, and providers.</p>","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 4","pages":"54-60"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144484013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A case of canalis sinuosus mimicking internal root resorption in periapical radiographs.","authors":"Adam D Bennett, Michelle Briner, Mary P Walker, Kenneth J Frick","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The canalis sinuosus is the terminal anatomy transport¬ing the anterior superior alveolar neurovascular bundle from the infraorbital canal to the anterior maxilla. Due to its termination in the anterior maxilla and potential diameter of 2.0 mm or greater, it has been previously reported to mimic a periapical radiolucency on 2-dimensional radiographs. This case report highlights incidental findings in a 25-year-old man following trauma to the anterior maxilla. During 2-dimensional radiographic assessment, a well-defined radiolucency suggestive of internal resorption was identified at the junction of the middle and apical thirds of the root of the maxillary left lateral incisor. Assessment via cone beam computed tomography identified the radiolucency as the canalis sinuosus. This case highlights the importance of 3-dimensional assessment of confounding findings in the anterior maxilla.</p>","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 4","pages":"16-20"},"PeriodicalIF":0.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144484012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tooth replacement from extraction to restoration. 2. Implant planning and placement.","authors":"Marcus Cowan","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 3","pages":"6-11"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144015154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of mixing tip design on the mechanical properties, porosity, and waste reduction of extra-light-body polyvinyl siloxane impression material.","authors":"Kaisha T Calvin, Eric Hu, Robert Masterson","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The purpose of this study was to compare the tensile strength, modulus of elasticity, porosity, and waste reduction of extra-light-body polyvinyl siloxane (PVS) impression material mixed with a helical impression tip or a new cartridge integrated system (NCIS) from the same manufacturer (Dentsply Sirona). The legacy teal tip (TT group) was compared with the NCIS red (RT group) and blue (BT group) mixing tips. Dumbbell-shaped specimens (TT, n = 17; RT, n = 15; and BT, n = 16) were prepared in accordance with German Institute for Standardization's rubber testing standard (DIN 53504.2017) and tested in a universal testing machine for tensile strength and modulus of elasticity. Porosity was evaluated via microcomputed tomography of cylindrical specimens (TT, n = 7; RT, n = 6; and BT, n = 7). Waste reduction was evaluated by comparing the mass of the mixing tips before use and after polymerization of the PVS to determine the difference in weight, which represented the amount of retained material (n = 11 per group). Tensile strength was analyzed using 1-way analysis of variance (ANOVA). Modulus of elasticity was analyzed using 1-way ANOVA with Tukey HSD. Porosity and waste reduction were analyzed using Shapiro-Wilk, Kruskal-Wallis, and Steel-Dwass tests. The analyses revealed no differences in tensile strength between groups (P = 0.493). The TT group had a significantly higher modulus of elasticity than the RT and BT groups (P < 0.001). The BT group had the highest mean porosity, and the difference between BT and RT was statistically significant (P = 0.048). The RT group showed the least material waste. Supporting the claims of the manufacturer, the NCIS tips generated tensile strengths comparable to that of the legacy tip and produced less waste, achieving waste reductions of 62% (RT) and 21% (BT) compared with the legacy tip. However, the RT and BT groups had a lower modulus of elasticity than the TT group, and porosity was increased in the BT group.</p>","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 3","pages":"28-33"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143966688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rare angiofibrolipoma of the oral cavity: a case report.","authors":"Monika Nandan, Harmeet Singh, Devender Singh Chauhan","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Angiofibrolipomas are one of the rarest variants of lipoma, a benign mesenchymal tumor composed of adipose tissue. Histologic examination of angiofibrolipomas reveals mature adipocytes, vascular tissue, and fibrous connective tissue. This case report describes an angiofibrolipoma in the oral cavity of a 40-year-old woman. A soft, painless, pedunculated mass was attached to the distolingual gingiva in the region of the mandibular third molar. The provisional diagnosis was pyogenic granuloma. The mass was excised using electrocautery, and the tissue was submitted for histologic examination. Histologic staining revealed mature adipose tissue, fibrous tissue, and numerous small blood vessels, consistent with a diagnosis of angiofibrolipoma. Further immunohistochemical analysis with CD34 biomarker was performed to rule out spindle cell carcinoma. At the 1-year follow-up examination, no recurrence was found. However, due to the rarity of these tumors, more data are needed to determine their recurrence rate.</p>","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 3","pages":"56-59"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144001793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A clinical guide to oral manifestations and diagnosis of limited systemic sclerosis: a case report.","authors":"Vanessa Carvajal Soto, Larissa Knysak Ranthum, Helen Heloene Rosa, Eduardo Bauml Campagnoli, Marcelo Carlos Bortoluzzi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Scleroderma is a rare connective tissue disease involving vascular injury and autoimmunity. It is characterized by the thickening, hardening, and tightening of connective tissues, leading to multifaceted complications. Scleroderma is classified into 2 forms, localized scleroderma and systemic sclerosis (SSc). The systemic form is further subdivided into limited SSc (formerly known as CREST syndrome) or diffuse SSc. This report describes the case of a 41-year-old woman with gingival pain, temporomandibular joint pain, frequent fevers, night sweats, excessive thirst, hunger, frequent urination, and weight gain. Her medical history included Sjögren syndrome and Raynaud phenomenon. Physical examinations revealed petechiae on the palms, lips, tongue, and soft palate; hypochromia of the lips; fibrosis; dry mouth; and active periodontal disease. Serologic test results were positive for anticentromere and antinuclear antibodies and negative for anti-topoisomerase I antibody, confirming the diagnosis of limited SSc. The oral manifestations were critical to the early diagnosis of limited SSc. Telangiectasia, labial fibrosis, and xerostomia were key indicators. Interdisciplinary collaboration between oral healthcare professionals and rheumatologists is essential for optimal patient management. Further research is needed to understand the underlying mechanisms of SSc and refine the diagnostic criteria.</p>","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 3","pages":"42-45"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143961271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"What every dentist needs to know about electric scooters.","authors":"John K Brooks, Youstina A Hanna, Nasir Bashirelahi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Somatic and craniofacial injuries from the use of electric scooters (e-scooters) have become a serious public health concern, affecting both riders and pedestrians. Accidents involving e-scooters pose a risk for bone fracutres and significant injuries to the soft tissues and brain, and severe injuries may result in death. Oral healthcare providers should particularly be aware of the potential for injuries to the oral hard and soft tissues. Dentists have the opportunity to educate their patients on preventive measures to mitigate e-scooter injuries and to advocate the use of protective equipment, including a helmet, mouthguard, and elbow and knee pads.</p>","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 3","pages":"46-49"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143963506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of the clinical performance of pit and fissure sealants containing either fluoride or amorphous calcium phosphate on permanent first molars.","authors":"Mahtab Memarpour, Alireza Sharifinejad, Azade Rafiee, Niloofar Mokhtari","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The objective of this study was to compare the clinical performance of 2 types of pit and fissure sealants--containing either fluoride or amorphous calcium phosphate (ACP)--over a period of 24 months. In this retrospective split-mouth study, 36 fluoride-containing sealants (Clinpro) and 36 ACP-containing sealants (Aegis) were evaluated 24 months after placement in the permanent first molars of 30 children aged 6 to 7 years. The sealants were inspected for retention based on the criteria of Oulis and Berdouses, with scores of 0, 1, and 2 representing total retention, partial loss, and total loss, respectively. In addition, the sealants were assigned scores for marginal integrity, marginal discoloration, and anatomical form based on the criteria of Feigal et al. Differences between groups in the occurrences of each evaluation variable were compared using relative risk with its 95% CI as well as the chi-square or Fisher exact test. The level of significance was set at P = 0.05. The retention success rates of the fluoride and ACP sealants after 24 months were 66.6% and 61.1%, respectively, but the difference was not statistically significant (P > 0.05). The overall clinical success of the fluoride-containing sealant was slightly greater than that of the ACP-containing sealant in terms of marginal discoloration and anatomical form; however, these differences were not statistically significant (P > 0.05). The marginal integrity of the sealant with ACP nanofillers was greater than that of the fluoride-containing sealant, but the difference did not reach statistical significance (P > 0.05). After a 24-month follow-up period, no significant disparities in clinical performance were observed between fluoride- and ACP-containing sealants in terms of retention rates, marginal integrity, marginal discoloration, or anatomical form. The clinical performance of both sealant types was found to be acceptable.</p>","PeriodicalId":12571,"journal":{"name":"General dentistry","volume":"73 3","pages":"68-72"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144009972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}