Journal of Clinical and Experimental Dentistry最新文献

{"title":"Artificial Neural Network-Assisted Facial Analysis for Planning of Orthognathic Surgery.","authors":"Lívia Mirelle Barbosa, Joana de Ângelis Alves Silva, José Ivson Soares da Silva, Tsang Ing Ren, Belmiro Cavalcanti do Egito Vasconcelos, José Rodrigues Laureano Filho","doi":"10.4317/jced.62088","DOIUrl":"10.4317/jced.62088","url":null,"abstract":"<p><strong>Background: </strong>Facial analysis for orthognathic surgery aims to identify facial features and determine how occlusion should be corrected to achieve facial balance. Several artificial neural networks have been developed to detect facial landmarks; however, no publications have reported the application of neural networks to measure facial proportions specifically for orthognathic surgery planning. Objectives: To develop a computer program that automates facial measurements through photograph capture, as well as to present the development stages of the program and the test results evaluating its effectiveness.</p><p><strong>Material and methods: </strong>Researchers from the Postgraduate Program in Oral and Maxillofacial Surgery at the University of Pernambuco (UPE), in collaboration with researchers from the IT Center at the Federal University of Pernambuco (UFPE), developed a computer program to automate facial measurements through photographic capture.</p><p><strong>Results: </strong>The developed program successfully detected nine measurements: (M1) middle third of the face, (M2) lower third, (M3) intercanthal distance, (M4) alar base, (M5) upper lip, (M6) upper lip vermilion, (M7) lower lip, (M8) lower lip vermilion, and (M9) interlabial gap. Of these measurements, only two showed significant discrepancies (<i>p</i><0.01) compared to the actual size in both versions of the program. These discrepancies referred to the middle third of the face and the lower lip vermilion.</p><p><strong>Conclusions: </strong>The developed program can be considered effective, as it automatically detected seven facial measurements relevant to orthognathic surgery. However, this line of research must be continued to create a larger database and train the network more robustly, increasing its ability to detect more facial landmarks and allowing the automated acquisition of additional measurements important for orthognathic surgery planning. <b>Key words:</b>Dentofacial deformities, maxillofacial abnormalities, orthognathic surgery, artificial intelligence, software.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1386-e1392"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632738/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142818232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facial palsy after orthognathic surgery: An integrative analysis of literature reports and an illustrative case.","authors":"Tatiane Fonseca Faro, Joana de Ângelis Alves Silva, Gustavo José de Luna Campos, Maristela Queiroz, Luciana Moraes Studart-Pereira, Caroline Vieira de Lucena, José Rodrigues Laureano Filho","doi":"10.4317/jced.62082","DOIUrl":"10.4317/jced.62082","url":null,"abstract":"<p><strong>Background: </strong>To describe a case of a patient with PFP after orthognathic surgery and discuss cases reports on temporary or permanent facial paralysis, factors that trigger injury, and treatment for facial paralysis associated with orthognathic surgery.</p><p><strong>Material and methods: </strong>This study has two parts: a report of the case of a 20- year-old man who underwent orthognathic surgery for facial paralysis, and an integrative literature review on postoperative facial paralysis following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statements and performed survival analyses of all cases reported to date.</p><p><strong>Results: </strong>The analysis was composed of 33 patients; 54,5% were male (mean age, 25 years). The right side was most affected by PFP (54.5%). Mandibular (48.5%) and bimaxillary (36.4%) surgeries were the most frequently performed procedures; the mandibular movements ranged from 1 to 18 mm (right side) and 2 to 18 mm (left side). The hypotheses regarding the possible causes of PFP differed between the selected studies. However, compression of the facial nerves was the most common. The use of steroids and physiotherapy were the most described treatment plans. The follow-up period ranged from 1.5 to 36 months (average, 6.12 months), and 78.7% of the patients had complete remission.</p><p><strong>Conclusions: </strong>Although rare, PFP after orthognathic surgery is one of the most serious complications, as it reduces the quality of life and social interaction of the patients. Therefore, early evaluation should be considered immediately in the postoperative period in patients undergoing orthognathic surgery. There presently is no consensus on the management protocol and establishing a systematization can be beneficial for patients with PFP. <b>Key words:</b>Facial palsy, facial paralysis, sagittal split ramus osteotomy, orthognathic surgery, complication, nerve damage.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1399-e1410"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632732/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142817910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Ultraviolet C light disinfection on the dimensional stability of dental impression materials: A scoping review of the literature.","authors":"Violeta Malpartida-Carrillo, Pedro Luis Tinedo-López, Julio Enrique Salas-Quispe, María Angélica Fry-Oropeza, Silvia Amaya-Pajares, Mutlu Özcan","doi":"10.4317/jced.62119","DOIUrl":"10.4317/jced.62119","url":null,"abstract":"<p><strong>Background: </strong>Ultraviolet C (UVC) light is a physical method proposed for disinfecting dental impression materials and preventing cross-infections in clinical practice. The investigations have focused on the UVC disinfection potential, but little is known about the consequences on dental materials' properties. This scoping review's objective is to evaluate information about the effect of UVC light on the dimensional stability of dental impression materials.</p><p><strong>Material and methods: </strong>An electronic search of dental literature in the Medline (via PubMed), Scopus, and Embase databases were systematically searched until July 31 of 2024 following the PRISMA-ScR guidelines. The search strategy was carried out considering three groups of words with indexing terms and Boolean operators. Two reviewers selected the titles and analyzed the abstracts according to the inclusion and exclusion criteria.</p><p><strong>Results: </strong>A total of six articles were included through electronic database searches. Four studies evaluated the dimensional stability by measuring dental casts made from an impression and two studies measured distances on discs made from stainless steel dies. The studies reported the use of polyether, addition and condensation silicones, alginate, and zinc oxide eugenol in the protocols followed. Three of the six included studies compared the effect of UVC light against glutaraldehyde 2% and sodium hypochlorite (1% or 5.25%), one study compared the UVC light against quaternary ammonium salts, phenoxyethanol, alcohol, and ozone, meanwhile another study compared the effect of UVC light against peracetic acid 0.2%, natural polymer of glucosamine and ozonated water. Regarding measuring devices, only one study reported the use of a measuring software, the majority used traveling microscope.</p><p><strong>Conclusions: </strong>Based on the findings, UVC light showed no significant dimensional changes in polyether, addition, and condensation silicones. <b>Key words:</b>Disinfection, dental impression materials, ultraviolet light.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1422-e1428"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632725/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142818236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing pterygoid implant placement without sinus intrusion in edentulous vietnamese patients: A comprehensive tomographic analysis and cross-sectional study.","authors":"Dau Cao Luong, Le Duc Lanh, Vo Lam Thuy, Pham Thi Huong Loan","doi":"10.4317/jced.61787","DOIUrl":"10.4317/jced.61787","url":null,"abstract":"<p><strong>Background: </strong>Severe maxillary resorption presents challenges in dental implant placement. This research aims to assess the feasibility, angular orientation, and appropriate length of pterygoid implants in patients with significant maxillary atrophy.</p><p><strong>Material and methods: </strong>The study examined Cone Beam Computed Tomography (CBCT) scans from 60 completely edentulous patients classified as Cawood and Howell's Classes V or VI, with less than 4mm residual bone height in their posterior maxilla. Experienced oral and maxillofacial surgeons and researchers conducted virtual pterygoid implant placement, evaluating various implant positions.</p><p><strong>Results: </strong>Position C was the most frequent, comprising 34.6% of cases evaluated. The average antero-posterior angle across all positions was 51.82±5.57 degrees, and the bucco-lingual angle was 74.15±16.53 degrees relative to the Frankfort horizontal plane. The optimal location for implant neck placement was approximately 10 mm from the most distal point of maxillary tuberosity, angled 50 degrees antero-posteriorly and 75 degrees bucco-lingually. While 18 mm implants were typically used, lengths of 20-22 mm were sometimes necessary for bicortical anchorage.</p><p><strong>Conclusions: </strong>This study demonstrates the viability of pterygoid implants even in cases of significant maxillary atrophy. The findings emphasize the importance of adapting implant placement strategies to individual patient anatomies. Further research may be needed to refine techniques for patients with severe maxillary resorption. <b>Key words:</b>Pterygoid Implant, Edentulous Patient, CBCT (Cone Beam Computed Tomography), Tomographic analysis.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1371-e1378"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632734/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142817862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Validity between signs and symptoms of sleep bruxism against a validated portable electromyographic device.","authors":"Márcio Lima Grossi, Lourenço Oliveira Castillo, Marcos Pascoal Pattussi, Georgia Meneghini Pinto, Ruy Teichert Filho","doi":"10.4317/jced.61720","DOIUrl":"10.4317/jced.61720","url":null,"abstract":"<p><strong>Background: </strong>Sleep bruxism is a major research area in dentistry today and needs valid clinical means of diagnosis against valid instrumental methods. Purpose: To assess the validity of the most commonly reported sleep bruxism (SB) signs and symptoms in the literature against a polysomnography (PSG) validated portable electromyographic (EMG) device (BiteStrip®).</p><p><strong>Material and methods: </strong>Fifty young adults (40 women & 10 men, 18-30 years old) volunteered for the sequential and simultaneous administration of the SB signs and symptoms questionnaire versus the BiteStrip®. The SB signs and symptoms questionnaire was comprised of 19 items divided in 5 areas: a) Area 1: self-awareness of tooth grinding, clenching, and/or tooth sounds/noises, b) Area 2: headaches and/or facial pain, c) Area 3: muscle fatigue and/or hypertrophy, d) Area 4: clicking, crepitation and/or locking in the TMJ, and e) Area 5: tooth sensitivity, tooth wear/breaking, and/or cheek/tongue indentations. A cross-tabulation between the dichotomic test results (positive = 1, negative = 0) between the all five SB areas separately using quartiles (positive test result=75th percentile or higher, negative test result=50th percentile or lower) versus a positive test result of the BiteStrip® (score=1 or higher) was performed.</p><p><strong>Results: </strong>Area 1 presented the highest sensitivity for SB screening (80.0%), but with low specificity (51.4%), diagnosing most SB cases, but with a high number of false positives. All other four areas had low sensitivity (range=37.9% to 58.6%) and screening capacity and are only useful if Area 1 is positive.</p><p><strong>Conclusions: </strong>Commonly reported SB signs and symptoms are not valid diagnostic measurements and can only be used as a screening method for either 'possible' or 'probable' SB diagnosis. <b>Key words:</b>Sleep bruxism, electromyography, validation study, polysomnographies.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1354-e1360"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632731/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142818162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inverted ductal papilloma: report of a rare case and review of the literature.","authors":"Carla Isabelly Rodrigues-Fernandes, Anne Evelyn Oliveira Moura, Danielle Machado Farias, Elaine Judite de Amorim Carvalho, Pablo Agustin Vargas, Danyel Elias da Cruz Perez","doi":"10.4317/jced.62199","DOIUrl":"10.4317/jced.62199","url":null,"abstract":"<p><p>Inverted ductal papilloma is an uncommon benign papillary endophytic tumor. This report aimed to present a case of inverted ductal papilloma of the oral cavity. A 54-year-old female patient presented with an asymptomatic nodular lesion on the lower lip. Time of duration was undetermined. The diagnostic hypotheses were fibrous hyperplasia and benign mesenchymal neoplasm. An excisional biopsy was performed, and microscopic examination showed an endophytic proliferation of squamous cells with the presence of microcysts, and goblet cells arranged in nest and islands. No cellular atypia was observed. The neoplastic cells were positive for CK7, and CK14. Proliferation index, demonstrated by Ki-67, was positively restricted to the basal tumor layer. The final diagnosis was oral inverted ductal papilloma. No signs of recurrence were found after surgery. <b>Key words:</b>Inverted papilloma, intraductal papilloma, oral papilloma.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1429-e1432"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632733/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142817838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical Evaluation of Root Canal Shaping Ability of a Stainless-steel File System Compared to Two Nickel-titanium Single-file Systems.","authors":"Alaa O Mais, Amr M Abdallah, Essam Osman, Hatem A Alhadainy","doi":"10.4317/jced.62012","DOIUrl":"10.4317/jced.62012","url":null,"abstract":"<p><strong>Background: </strong>Root canal shaping is an important phase in endodontic treatment to preserve the integrity of root structures. This clinical study used cone-beam computed tomography (CBCT) to assess the shaping ability of Tornado compared to WaveOne (WO), and OneShape (OS) rotary systems.</p><p><strong>Material and methods: </strong>MesioBuccal canals of lower molars with curving angles ranging from 15° to 45° were used in 30 patients to evaluate the apical transportation and centering ability of Tornado, WO, and OS. The canals were divided into 3 groups according to the instrumentation system (n=10), which corresponded to the systems that were employed. Centering ratio and canal transportation were assessed at 2, 5, and 8 mm from the apical foramen using CBCT. Statistical analysis was conducted using the Kruskal-Wallis test and Mann-Whitney test at p-value = 0.05.</p><p><strong>Results: </strong>All tested levels showed no statistically significant difference in transportation and centering ability (<i>P</i>>0.05). The Tornado file preserved the original canal curvature with no statistical significance compared to WO files and OS.</p><p><strong>Conclusions: </strong>The tornado file system was proven to provide an accepted quality of root canal shaping compared to WO and OS rotary systems. All systems maintained the original canal anatomy with appropriate centralization and no canal transportation. <b>Key words:</b>Canal Centering Ability, Canal Transportation, Cone-beam Computed Tomography, Nickel-Titanium Files, Tornado Rotary System.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1393-e1398"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632736/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142818233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence of mandibular, condylar and ramus asymmetry in panoramic radiographs of adult individuals. A cross-sectional study.","authors":"Sandra Pinto-Wong, Luis Ernesto Arriola-Guillén","doi":"10.4317/jced.62144","DOIUrl":"10.4317/jced.62144","url":null,"abstract":"<p><strong>Background: </strong>Mandibular asymmetry is more common than previously thought. The purpose of this study was to determine the prevalence of mandibular, condylar and ramus asymmetry by means of the Habets index using panoramic radiographs obtained from adult individuals.</p><p><strong>Material and methods: </strong>This cross-sectional study evaluated 210 panoramic radiographs performed in adults attending a private referral radiology center in Lima, Peru. Radiographs of both genders were considered, including permanent dentition and of good quality. A trained and calibrated evaluator assessed mandibular, condyle and ramus height using the Habets method, considering asymmetry when the difference between the two sides was greater than 3%. Fisher's exact test, the paired Student's t-test and finally binary logistic regression were used to determine the characteristics of the asymmetries.</p><p><strong>Results: </strong>Mandibular asymmetry was present in 39.5%, condylar asymmetry in 81.4% and mandibular ramus asymmetry in 48.6%, with no differences between genders (<i>P</i>>0.05). Only women showed a difference between the two sides in mandibular (<i>P</i>=0.008), and condylar height (<i>P</i>=0.013), although multivariate analysis showed neither gender nor age to have any significant influence on the occurrence of mandibular, condylar or ramus asymmetries.</p><p><strong>Conclusions: </strong>The prevalence of mandibular, condylar and ramus asymmetries in the sample evaluated was significant, although most of these asymmetries can be considered mild, given that the highly sensitive Habets index classifies any difference greater than 3% as asymmetry. These asymmetries, although most of them could be clinically not very noticeable, should be considered when planning treatments. In addition, neither gender nor age was found to significantly influence the occurrence of these asymmetries. <b>Key words:</b>Asymmetry, condyle, mandible, orthodontics.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1332-e1338"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632728/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142818152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nano-Hydroxyapatite toothpaste of rice field snail shell combined with basil leaf extract as a remineralizing and antibacterial agent to prevent dental caries.","authors":"Wienda Cinta Aliyyu, Farahdika Ardelia Riva, Sabrina Majesta Putri Anabel, Irfan Dwiandhono, Rinawati Satrio, Dwi Nur Indah Sari","doi":"10.4317/jced.62073","DOIUrl":"10.4317/jced.62073","url":null,"abstract":"<p><strong>Background: </strong>This study aimed to compare rice snail shell nano-hydroxyapatite (nano-HAp) toothpaste combined with basil leaf extract and 1450 ppm fluoridated herbal toothpaste as remineralizing and antibacterial agents.</p><p><strong>Material and methods: </strong>Experimental toothpastes were prepared with different concentrations of nano-HAp (5% nano-HAp, 10% nano-HAp) and a fixed concentration of basil leaf extract (5% extract). 24 bovine tooth enamel samples were divided into 4 treatment groups. After 6 days of pH cycling, surface microhardness was tested using Vickers Microhardness Test and microporosity was observed using Scanning Electron Microscopy (SEM). The pitting diffusion method was used to test the antibacterial activity of toothpaste against Streptococcus mutans and Lactobacillus acidophilus.</p><p><strong>Results: </strong>Enamel surface microhardness showed an increase with increasing nano-HAp concentration, while fluoride toothpaste showed the highest level of surface microhardness. Microporosity observation showed the disappearance of microporosity as nano-HAp concentration increased, while fluoride toothpaste still left microporosity. Antibacterial activity of the toothpaste showed that the mean inhibition zone of each group was not significantly different with a very strong inhibition zone.</p><p><strong>Conclusions: </strong>Rice snail shell nano-HAp toothpaste combined with 5% basil leaf extract is effective as a remineralizing agent by reducing the level of tooth enamel microporosity but cannot match 1450 ppm fluoride toothpaste in increasing surface hardness. In addition, nano-hydroxyapatite toothpaste of paddy field snail shell combined with 5% basil leaf extract is effective as an antibacterial agent for preventing dental caries because it has antibacterial activity equivalent to 1450 ppm fluoride herbal toothpaste. <b>Key words:</b>Nano-hydroxyapatite, basil leaf extract, toothpaste, remineralization, antibacterial.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1323-e1331"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632727/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142817843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of the passive self-ligating system on alveolar bone thickness, dental inclinations, and arch dimensions.","authors":"Murilo Matias, Bruno Vieira, Karina Maria Salvatore Freitas, Célia Regina Maio Pinzan-Vercelino, Paula Cotrin, Fabrício Pinelli Valarelli, Diana Margarita Pirovano Caceres, Guilherme Janson, Marcos Roberto de Freitas","doi":"10.4317/jced.61845","DOIUrl":"10.4317/jced.61845","url":null,"abstract":"<p><strong>Background: </strong>We aimed to evaluate changes in buccal bone thickness (BBT), buccolingual dental inclinations (BLI), and transversal widths (TW) after treatment using a passive self-ligating system.</p><p><strong>Material and methods: </strong>Pre- and posttreatment cone-beam computed tomography images (CBCT) of 21 Class I patients (initial mean age: 14.99 ± 1.27 years; initial crowding of at least 4mm) treated without extractions using passive self-ligating appliances were evaluated. Buccal bone thickness, dental inclinations, and transversal widths were measured, and their changes were compared using paired t-test. The associations were assessed using the Pearson correlation coefficient.</p><p><strong>Results: </strong>BBT showed statistically significant decreases in both arches, mainly for the posterior teeth. Most teeth were proclinated after treatment, with more buccal tipping occurring for the anterior teeth and second premolars in both arches. The results demonstrated significant increases in maxillary and mandibular TW, except for maxillary intercanine distance. Negative correlations between BBT and buccal inclination were observed for the maxillary right lateral incisor, maxillary left second premolar, right mandibular canine, and between BBT and TW for the maxillary left second premolar. A positive association was observed between BBT and TW only for the mandibular right first premolar.</p><p><strong>Conclusions: </strong>In general, the treatment with passive self-ligating system showed an expansion of the dental arches followed by a decrease in BBT, probably caused by buccal inclination in both arches. <b>Key words:</b>Orthodontic Brackets, Cone-Beam Computed Tomography, Periodontium, Orthodontics.</p>","PeriodicalId":15376,"journal":{"name":"Journal of Clinical and Experimental Dentistry","volume":"16 11","pages":"e1361-e1370"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11632730/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142818237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}