BMC Oral Health最新文献

{"title":"Epidemiology of cleft lip and palate in Bhutan, 2015-2022.","authors":"Karma Tobgyel, Prakriti Rai, Kuenga Choden, Tshewang Gyeltshen","doi":"10.1186/s12903-024-05177-7","DOIUrl":"10.1186/s12903-024-05177-7","url":null,"abstract":"<p><strong>Background: </strong>The epidemiology of cleft lip (CL) and cleft palate (CLP) has not previously been described in the context of the Bhutan and Bhutanese populations. Using National Birth Defects Surveillance Data and other vital statistics, we present the comprehensive epidemiology of the cleft lip and palate in Bhutan.</p><p><strong>Methodology: </strong>The National Birth Defects Surveillance Data Registry from 2015 to 2022 is reviewed retrospectively, covering 8 years of birth defect surveillance in the country from records maintained with three referral hospitals in the country. The baseline prevalence and incidence of cleft lip and palate have been presented over the years. The incidence of cleft lip and palate was defined as the number of cases per 1000 live births. We used Poisson's regression to compute the incidence of cleft lip and palate. Pearson chi-square tests (χ2) were used to examine the associations of maternal and child characteristics with cleft lip and palate.</p><p><strong>Results: </strong>A total of 1401 newborns with various birth defects were born among the 89,078 live births from 2015 to 2022 in Bhutan. Of these, 122 (8.7%) constituted orofacial clefts. The prevalence of orofacial clefts tended to increase, with a period prevalence of 1.37 per 1000 live births. There were more cases in males (72) than in females (50). The incidence rate ratio ranged from 1.2 to 2.0 compared with the 2015 baseline year, indicating increased rates over time.</p><p><strong>Conclusion: </strong>Orofacial clefts constituted 8.7% of total birth defects and 1.37 per 1000 live births over the years. The increasing prevalence trends and incidence rate ratios over the years underscore the importance of ongoing surveillance and interventions to address the burden of orofacial clefts in Bhutan.</p><p><strong>Clinical trial number: </strong>Not applicable.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1385"},"PeriodicalIF":2.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566114/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of CAD-CAM block thickness and translucency on the polymerization of luting materials.","authors":"Bengü Doğu Kaya, Selinsu Öztürk, Ayşe Aslı Şenol, Erkut Kahramanoğlu, Pınar Yılmaz Atalı, Bilge Tarçın","doi":"10.1186/s12903-024-05171-z","DOIUrl":"10.1186/s12903-024-05171-z","url":null,"abstract":"<p><strong>Aim: </strong>This in-vitro study aimed to evaluate the degree of conversion (DC) of dual-cured luting cement (Bifix QM, VOCO) and flowable composite (Grandio Flow, VOCO) under lithium disilicate glass-ceramic (IPS e.max CAD, Ivoclar Vivadent) and hybrid ceramic (Grandio Blocs, VOCO; Cerasmart, GC) CAD-CAM blocks with different thicknesses.</p><p><strong>Materials and methods: </strong>Contrast ratio (CR), translucency (TP_ab, TP₀₀), and opalescence (OP) parameters of 30 disc-shaped CAD-CAM blocks (n = 5) prepared with two different thicknesses (1.5 and 2 mm) and 8 mm diameters were calculated using a spectrophotometer (VITA Easyshade V, Zahnfabrik). A total of 36 Bifix QM and Grandio Flow samples were prepared at 100 μm thickness using a specific setup by polymerizing from the top of the blocks. Following immersion in distilled water at 37 °C for 24 h, luting materials were examined by Fourier Transform Infrared Spectroscopy for DC calculation. Data were analyzed using One-way ANOVA, Kruskal Wallis, Mann Whitney U, and Independent Samples t-tests (p < 0.05).</p><p><strong>Results: </strong>It was observed that, as the block thickness increased TP_ab, TP₀₀, and OP decreased, while CR increased. There was no significant difference between the DC of Bifix QM and Grandio Flow when 1.5 mm blocks were used in all groups (p > 0.05). DC of Grandio Flow was significantly higher than Bifix QM under 2 mm-IPS e.max CAD (p = 0.011).</p><p><strong>Conclusion: </strong>The translucency of the CAD-CAM blocks varies depending on their thickness. However, there was no significant difference in the DC of the luting materials depending on the block thickness. Further studies are needed on the use of flowable resin composites as luting material.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1384"},"PeriodicalIF":2.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566408/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distalization of mandibular molar with iatrogenic root fracture in Class III malocclusion: a case report.","authors":"Hyojin Kim, Hyeon Gi Hong, Ji Yoon Jeon, Kee-Joon Lee","doi":"10.1186/s12903-024-05174-w","DOIUrl":"10.1186/s12903-024-05174-w","url":null,"abstract":"<p><strong>Background: </strong>Placement of interradicular orthodontic miniscrews poses a potential risk of root damage, including superficial root contact and root fracture. This case report describes the iatrogenic root-injured tooth movement of a 27-year-old male with skeletal Class III malocclusion as nonsurgical orthodontic treatment.</p><p><strong>Case presentation: </strong>An orthodontic miniscrew between the mandibular right first and second molars perforated the distal root of the mandibular first molar. A root fracture was discovered 4 months after miniscrew placement. Owing to the potential risk of ankylosis related to surgical intervention, a direct orthodontic distalizing force was applied towards the fractured distal root segment without additional treatment, resulting in considerable movement of the fractured tooth with maintaining tooth vitality. However, gradual root resorption of a fractured tooth with a separate root segment was observed. The mandibular arch distalization of skeletal Class III malocclusion was successfully performed and retained for 3 years 8 months with stable occlusion.</p><p><strong>Conclusions: </strong>This case reveals a clinical remedy when root movement of a tooth with root fracture is indicated. The use of extra-alveolar miniscrews or miniplates can be considered for mandibular arch distalization to prevent potential root injuries caused by miniscrew placement.</p><p><strong>Clinical trial number: </strong>Not applicable.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1386"},"PeriodicalIF":2.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566079/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical analysis of 1,038 cases of odontogenic jawbone cysts.","authors":"Chongli Du, Zeyu Wang, Duoduo Lan, Ruikun Zhu, Dong Wang, Hanying Wang, Chengao Wan, Tingyi Gao, Rui Han, Liang Liu, Kai Zhang","doi":"10.1186/s12903-024-05167-9","DOIUrl":"10.1186/s12903-024-05167-9","url":null,"abstract":"<p><strong>Background: </strong>This study aims to analyse the clinical characteristics of different types of odontogenic jawbone cysts (OJCs) and to provide a theoretical basis for prevention and clinical treatment.</p><p><strong>Methods: </strong>Data from 1,038 patients with OJCs were collected, and relevant information, such as sex, age, clinical symptoms and signs, imaging data, number of lesions, lesion location, pathological diagnosis, clinical treatment and prognosis, was statistically analysed.</p><p><strong>Results: </strong>According to the World Health Organization (WHO) classification of OJCs in 2022, the highest incidence rate was observed for radicular cysts (RCs), accounting for 58.96% of the total number of cases, followed by dentigerous cysts (DCs), accounting for approximately 23.22% of cases. lateral periodontal cysts (LPCs) and calcifying odontogenic cysts (COCs) comprised the lowest number of cases. The age distribution of patients was between 4 and 89 years, and the high incidence age group was youth and middle age, accounting for 66.67% of the total number of cases. The male-to-female ratio of patients was 1.51:1, and there was a statistically significant difference between the sexes(p < 0.05).In terms of the site of incidence, odontogenic keratocysts (OKCs) were prevalent in the mandibular molar region. In addition, mandibular ramus, inflammatory collateral cysts (ICCs) and dentigerous cysts (DCs) were more common in the mandibular third molar, and radicular cysts (RCs) and calcifying odontogenic cysts (COCs) were prevalent in the maxillary anterior region. On imaging, 955 (92.0%) lesions were solitary, and 83 (8.0%) were multiple. The treatment included four types of surgery, including simple curettage, marsupialization, marsupialization followed by secondary curettage, and partial resection of the jaw, and a total of 921 patients were followed up, with a recurrence rate of 2.82%.</p><p><strong>Conclusions: </strong>OJCs are more common in males than in females, and a statistically significant difference is observed in the most prevalent types of cysts occurring at different ages and in various regions of the jawbone (p < 0.05). Early diagnosis should be made with the help of X-rays, age, location, and clinical symptoms. In addition, appropriate treatment methods should be selected, and long-term follow-up observation is needed.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1387"},"PeriodicalIF":2.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566165/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstomia is associated with functional impairment and is a poor prognostic factor in systemic sclerosis - a single center observational study with survival analysis.","authors":"Kristóf Filipánits, Gabriella Nagy, Cecília Varjú, László Czirják, Tünde Minier","doi":"10.1186/s12903-024-05178-6","DOIUrl":"10.1186/s12903-024-05178-6","url":null,"abstract":"<p><strong>Background: </strong>Objectives were to assess the mouth opening ability (MOA) among patients with systemic sclerosis (SSc) in comparison to a healthy control population. The impact of microstomia (decrease in any of the MOA parameters) on physical performance and long-term survival was also investigated.</p><p><strong>Methods: </strong>Interincisal (ID), interlabial (LD), the intercommissural distances at both opened mouth and closed mouth (OW, CW) and the oral area (OA) and circumference (OC) all were assessed in 131 SSc patients. Microstomia was defined based on the oral aperture values of a healthy control group (n = 63) with similar median age and sex distribution. Tests evaluating functional performance were performed. Survival analysis by univariate and multivariate Cox regression analysis was performed.</p><p><strong>Results: </strong>Microstomia was present in 56.5% of the entire SSc cohort. Patients with microstomia had higher number of contractures compared to those with preserved oral aperture parameters (median 10 vs. 7, p < 0.01). LD, OA and OC correlated negatively with the number of joint contractures, both in the entire SSc cohort and separately in the diffuse (dcSSc) and limited cutaneous subsets (lcSSc), (rho: between - 0.267 and - 0.516, p < 0.05). Reduced ID was associated with worse Health Assessment Questionnaire Disability Index (HAQ-DI) only in dcSSc while reduced LD was linked to increased HAQ-DI scores in both SSc subsets. Decreased OA upon enrollment was associated with an increased risk in mortality by multivariate Cox regression analysis (HR: 2.74; 95% CI, 1.15-6.53).</p><p><strong>Conclusions: </strong>Microstomia was associated with joint damage, and higher overall disability based on HAQ-DI. Interlabial distance was a beneficial, convenient measurable parameter to characterize oral aperture. Oral area was an independent poor prognostic factor regarding long-term survival.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1390"},"PeriodicalIF":2.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11568575/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does relative bracket base area affect the accuracy of reconstructed buccal surface in the virtual bracket removal technique?","authors":"Peiqi Wang, Liwei Zhu, Liandi Cheng, Runzhe Xiang, Junyan Leng, Siyuan Hu, Ding Bai, Yipeng Wang, Chaoran Xue","doi":"10.1186/s12903-024-05090-z","DOIUrl":"10.1186/s12903-024-05090-z","url":null,"abstract":"<p><strong>Background: </strong>Virtual bracket removal (VBR) facilitates efficient retainer fabrication for fixed orthodontics in a digital workflow. This study is aimed at assessing the influence of the relative bracket base area (RBA), representing the proportion of the labial/buccal surface area intended for removal, on the surface reconstruction accuracy in the VBR technique.</p><p><strong>Methods: </strong>196 teeth from seven resin dental models were included. The maximal bracket base surface area (MBA) was determined by the rectangular area extending to the lateral edges of the tooth labial/buccal surface. On each tooth, diverse RBA percentages (20-100% in 10% increments) of the MBA was removed, respectively. Following removal, the buccal surfaces of the teeth were digitally reconstructed. Subsequently, the root mean square (RMS) values, which represent the surface deviations between the reconstructed and original dentitions was calculated for each tooth. The obtained RMS values were compared within and among groups of different RBAs and compared with the clinically acceptable limit (CAL) of 0.05 mm.</p><p><strong>Results: </strong>As the RBA increased, there was a discernible trend of elevated RMS values, both for the overall dentition and each specific tooth type. Among the lower teeth, the molars consistently displayed the highest RMS values in almost all groups, with significantly higher mean/median RMS values compared to the lower incisors (P < 0.05), excluding the 0.2MBA group. Specifically, across all tooth types, the mean/median RMS values in groups with 20-80% MBA were significantly lower than CAL of 0.5 mm (P < 0.05). This trend persisted for all tooth types in the 0.9MBA group except the lower canines and molars.</p><p><strong>Conclusion: </strong>The mean/median RMS values elevated as the RBA increased. VBR technique remains sufficiently accurate for retainer fabrication, provided that the RBA remains below 80% of the MBA for lower canines and molars and 90% for all the other tooth types. Notably, residual bonding materials should be considered in clinical use because they are also removed in VBR and thereby constitute a portion of RBA.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1379"},"PeriodicalIF":2.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566166/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Human identification via digital palatal scans: a machine learning validation pilot study.","authors":"Ákos Mikolicz, Botond Simon, Aida Roudgari, Arvin Shahbazi, János Vág","doi":"10.1186/s12903-024-05162-0","DOIUrl":"10.1186/s12903-024-05162-0","url":null,"abstract":"<p><strong>Background: </strong>This study aims to validate a machine learning algorithm previously developed in a training population on a different randomly chosen population (i.e., test set). The discrimination potential of the palatal intraoral scan-based geometric and superimposition methods was evaluated.</p><p><strong>Methods: </strong>A total of 23 participants (16 females and seven males) from different countries underwent palatal scans using the Emerald intraoral scanner. Geometric-based identification involved measuring the height, width, and depth of the palatal vault in each scan. These parameters were then input into Fisher's linear discriminant equations with coefficients determined previously on a training set. Sensitivity and specificity were calculated. For the superimposition method, scan repeatability was compared to between-subjects differences, calculating mean absolute differences (MAD) between aligned scans. Multiple linear regression analysis determined the effects of sex, longitude, and latitude of country of origin on concordance.</p><p><strong>Results: </strong>The geometric-based method achieved 91.2% sensitivity and 97.1% specificity, consistent with the results from the training set, showing no significant difference. Latitude and longitude did not significantly affect geometric-based matches. In the superimposition method, the between-subjects MAD range (1.068-0.214 mm) and the repeatability range (0.011-0.093 mm) did not overlap. MAD was minimally affected by longitude and not influenced by latitude. The sex determination function recognized females over males with 69.0% sensitivity, similar to the training set. However, the specificity (62.5%) decreased.</p><p><strong>Conclusions: </strong>The assessment of geometric and superimposition discrimination has unequivocally demonstrated its robust reliability, remaining impervious to population. In contrast, the distinction between sexes carries only moderate reliability. The significant correlation observed among longitude, latitude, and palatal height suggests the feasibility of a comprehensive large-scale study to determine one's country of origin.</p><p><strong>Clinical significance: </strong>Portable intraoral scanners can aid forensic investigations as adjunct identification methods by applying the proposed discriminant function to palatal geometry without population restrictions.</p><p><strong>Trial registration: </strong>The Clinicatrial.gov registration number is NCT05349942 (27/04/2022).</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1381"},"PeriodicalIF":2.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566520/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical and radiographic assessment of the association between orthodontic mini-screws and periodontal health.","authors":"Mehmet Selim Yildiz, Pelin Acar Ulutas, Ilknur Ozenci, Aliye Akcalı","doi":"10.1186/s12903-024-05136-2","DOIUrl":"10.1186/s12903-024-05136-2","url":null,"abstract":"<p><strong>Objectives: </strong>Proper anchorage control is crucial for predictable tooth movement and preventing inadequate torque during orthodontic treatment. Through clinical and radiographic parameters; this study assesses the association between mini-screws and periodontal health.</p><p><strong>Materials and methods: </strong>A prospective observational study included 16 systemically healthy non-smoking individuals requiring mini-screws. Mini-screws with a rough, titanium oxide-coated surface were placed. Periodontal assessments (Plaque index, gingival index, probing pocket depth, gingival recession, bleeding on probing, mucosal discomfort, mucosal redness, keratinized tissue width, supracrestal tissue height, and transmucosal soft tissue thickness) were performed at 2nd week and 3 months post-placement. Radiographic evaluations measured distances between mini-screws and adjacent teeth using Image J software.</p><p><strong>Results: </strong>The study included 13 females and 3 males (mean age 21.9 ± 1.8 years) with 24 mini-screws. Early mini-screw loss was not observed. Significant reductions in site-level Gingival Index and bleeding on probing (p < 0.05) and full-mouth bleeding on probing (p < 0.05) were noted over time. Absence of significant differences was found in mucosal discomfort and redness, keratinized tissue width, or transmucosal soft tissue thickness, but supracrestal tissue height decreased significantly (p < 0.05). Radiographically, significant bone reduction around mini-screws was observed at 3 months, with torque gauge values significantly decreased as well (p < 0.05).</p><p><strong>Conclusions: </strong>Orthodontic mini-screws can be effectively utilized in orthodontic treatment with proper planning and monitoring. While improvements in gingival health were observed with targeted oral care, the study underscores the need for careful consideration of potential risks to periodontal tissues, such as reductions in supracrestal tissue height and bone levels. A balanced approach that integrates preventive strategies with precise screw placement is essential to maximize the benefits of mini-screws while minimizing potential periodontal complications.</p><p><strong>Clinical relevance: </strong>While proper oral hygiene can help control inflammation around mini-screw sites, clinicians must also be mindful of potential risks, such as reductions in bone levels and tissue height. Careful patient selection, precise placement, and regular follow-up are crucial to ensure the stability of mini-screws' stability and to prevent complications, ultimately contributing to better treatment outcomes in orthodontic care.</p><p><strong>Trial registration: </strong>This study was registered on ClinicalTrials.gov with the registration number NCT06491849 on June 28, 2024.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1376"},"PeriodicalIF":2.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566151/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142614653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Making plaque assessment easier - a validation study of simplified versions of the Marginal Plaque Index.","authors":"Ulrike Weik, Zdenka Eidenhardt, Renate Deinzer","doi":"10.1186/s12903-024-05168-8","DOIUrl":"10.1186/s12903-024-05168-8","url":null,"abstract":"<p><strong>Background: </strong>The assessment of plaque indices may be time-consuming and error-prone. Simplification of these indices may increase their utility without compromising their validity. The aim of this study was to evaluate the validity of two simplified versions of the Marginal Plaque Index (MPI).</p><p><strong>Methods: </strong>Two simplified versions of the MPI as well as the Plaque Control Record (PCR) were derived from full-scale MPI assessments in two studies with four age groups (N = 42 10-year-olds; N = 24 15 year-olds; N = 53 university students (18y-33y); N = 66 parents (32y-57y). Correlations with the Turesky modification of the Quigley-Hein Index (TQHI) and the Papillary Bleeding Index (PBI) were calculated.</p><p><strong>Results: </strong>The indices derived from the MPI showed high convergence with each other (all r ≥ 0.94) and with the TQHI (r ≥ 0.80). The concurrent validity of the MPI with the PBI was equal to that of the TQHI in all age groups. The simplified versions of the MPI and the PCR show a lower convergent validity with the PBI than the MPI within parents (p < 0.05). In the other age groups, their convergent validity was equal to that of the MPI.</p><p><strong>Discussion: </strong>Simplification of the MPI does not affect its convergent validity with other plaque indices but may reduce its concurrent validity with the PBI in middle-aged adults.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1377"},"PeriodicalIF":2.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566490/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142614216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of conventional and digital impression approaches for edentulous maxilla: clinical study.","authors":"Sinem Kahya Karaca, Kıvanc Akca","doi":"10.1186/s12903-024-05151-3","DOIUrl":"10.1186/s12903-024-05151-3","url":null,"abstract":"<p><strong>Background: </strong>The expectations for the clinical and laboratory phases of tissue-supported complete dentures (TSCDs) are changing. Currently, there is a trend towards fast, comfortable, reliable, and low-cost methods. In TSCD impressions, simplified impression and digital impression methods involving the use of an intraoral scanner (IOS) are becoming preferable. Given this situation, this study aims to compare different conventional and digital impression methods used in TSCDs.</p><p><strong>Methods: </strong>Patients with maxillary complete edentulism and healthy oral mucosa were included in this study. In the digital group, two different impressions were made using an IOS (Trios4) without (D1) and with (D2) artificial intelligence scanning (AI-Scan). In addition, a modified impression (D3) was made using the IOS in two steps, including the occlusal rim. In the conventional group, a two-step impression (C1) using an individual tray with zinc oxide eugenol and a one-step simplified impression (C2) using a stock tray with irreversible hydrocolloid were made. The comparison groups were determined to be C1-C2, C1-D1, D1-D2, and D1-D3. The best-fit algorithm was used to superimpose the impressions to be compared. The right and left vestibular areas, postdam area, palatal area, right and left matching area, entire surface, and borders were evaluated separately.</p><p><strong>Results: </strong>Fifteen patients were included in this study. In the C1-C2 group, the mean deviation at the borders was statistically significant (p = 0.01). No regions in the C1-D1 and D1-D3 groups exhibited significant differences in the mean amount of deviation (p > 0,05). In the D1-D2 group, the mean deviation in the palatal area was significant (p = 0,03).</p><p><strong>Conclusion: </strong>In maxillary edentulism, digital impressions have shown comparable results to conventional impressions, suggesting promising implications for clinical applications.</p><p><strong>Trial registration: </strong>The clinical trial has been registered (ClinicalTrials.gov ID NCT06400277, registration date 06/05/2024, 'retrospectively registered').</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"24 1","pages":"1378"},"PeriodicalIF":2.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566592/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142614658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}