BMC Oral Health最新文献

{"title":"Evaluation of fracture resistance and surface characteristics in monolithic zirconia: a comparative analysis of 3D printing and milling techniques.","authors":"Rogina M Hassan, Yomna Ibrahim, Rewaa G AboELHassan, Amir Shoukry Azer","doi":"10.1186/s12903-025-06570-6","DOIUrl":"https://doi.org/10.1186/s12903-025-06570-6","url":null,"abstract":"<p><strong>Background: </strong>The primary method for fabrication of zirconia restorations is subtractive manufacturing technology. This process mills restorations from large blocks using various cutting tools resulting in large amounts of waste material. 3D printing has emerged as an alternative tool for additive manufacturing of zirconia with less waste and high efficiency.</p><p><strong>Methods: </strong>A total of 24 monolithic zirconia crowns were divided into: Group I (milled zirconia crowns) and Group II (3D printed zirconia crowns) (n = 12). The crowns were then polished and glazed then subjected to 5000 thermocycles. Fracture resistance for the crowns was measured using universal testing machine followed by estimation of Weibull modulus and characteristic strength. Fractographic analysis was done using scanning electron microscope (SEM). 72 discs (10 mm × 2 mm) were fabricated by milling and printing (n = 36) then subjected to 5000 thermocycles. The discs were used for surface roughness assessment both before (n = 12) and after (n = 12) glazing using contact profilometer and unglazed discs (n = 12) were used for microhardness which was measured by Vickers microhardness tester. Comparisons between study groups were performed using independent samples t-test. Two-way ANOVA was performed to assess the association between material (milled or printed) and glazing (glazed or unglazed) with surface roughness. Significance level was set at P-value < 0.05.</p><p><strong>Results: </strong>In comparison to 3D printed zirconia, the milled version exhibited comparable fracture resistance, reduced surface roughness, and increased microhardness. While both groups showed comparable fracture resistance with no significant difference (P = 0.26), the milled zirconia demonstrated significantly better surface finish (P < 0.001) and microhardness (P < 0.001). However, glazing lowered the surface roughness significantly for both milled (P < 0.001) and printed (P = 0.001) zirconia, bridging the gap in surface quality between the two fabrication techniques.</p><p><strong>Conclusions: </strong>The enhanced fracture resistance and Weibull modulus of 3D printed zirconia indicate increased reliability and consistency in its mechanical properties. However, limitations of its surface properties highlight the need for further optimization before full clinical adoption.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1236"},"PeriodicalIF":2.6,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144706312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"pH-Responsive mesoporous silica nanoparticle-reinforced composite resin with remineralization capability.","authors":"Yongcheng Ge, Ting Zhao, Yuguang Liu, Sizheng Fan, Pengyuan Liu, Chengji Zhao, Xiaoqiu Liu","doi":"10.1186/s12903-025-06471-8","DOIUrl":"https://doi.org/10.1186/s12903-025-06471-8","url":null,"abstract":"<p><strong>Objective: </strong>Enhancing the mechanical properties of composite resins and promoting dentin remineralization are effective strategies for extending the longevity of restorations. In this study, we developed a pH-responsive composite resin reinforced with phosphorylated chitosan (Pchi)/amorphous calcium phosphate (ACP) and amino-functionalized mesoporous silica nanoparticles (MSNs) (Pchi/ACP@A-MSN complexes).</p><p><strong>Methods: </strong>MSNs and Pchi/ACP were synthesized, and the resulting composite resins were classified into five groups based on the filler compositions: Group A (45wt.% A-MSNs + 15wt.% Pchi/ACP + 40wt.% resin matrix), Group B (22.5wt.% A-MSNs + 37.5wt.% Pchi/ACP@A-MSNs + 40wt.% resin matrix), Group C (45wt.% nonporous silica + 15wt.% Pchi/ACP + 40wt.% resin matrix), Group D (15wt.% Pchi/ACP + 85wt.% resin matrix), and Group E (100wt.% resin matrix). The degree of double-bond conversion and mechanical properties (Flexural modulus, flexural strength, and Vickers hardness) of each group were measured. The remineralization performance and calcium ion (Ca²⁺) release performance were observed. Cell viability was evaluated by CCK-8 assay.</p><p><strong>Results: </strong>Group A exhibited the highest mechanical performance, with flexural strength of 115 ± 9.68 MPa, flexural modulus of 5.99 ± 0.44 GPa, and Vickers hardness of 31.73 ± 2.39 HV. All groups achieved double-bond conversion rates > 50% after 60 s of light curing (P > 0.05). At pH 4.0, Group B exhibited the highest Ca²⁺ release (276 µg/mL), while Group D had the highest release at pH 7.4 (128 µg/mL). SEM and EDS analyses indicated that Group D achieved the most substantial dentin remineralization, followed by Groups C and A. All groups maintained cell viability above 75% throughout the 7-day assay, with no significant cytotoxicity observed.</p><p><strong>Conclusion: </strong>A composite formulation containing 45 wt% A-MSNs and 15 wt% Pchi/ACP (Group A) significantly enhanced mechanical strength. The 15 wt% Pchi/ACP formulation (Group D) demonstrated the greatest remineralization effect. Group B, combining A-MSNs and Pchi/ACP@A-MSNs, provided pH-responsive Ca²⁺ release with a favorable balance of mechanical performance and remineralization potential. All formulations met the biocompatibility requirements for dental applications.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1234"},"PeriodicalIF":2.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144697624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maxillary molar distalization with invisalign in adult patients: a preliminary study using iTero-created digital models.","authors":"Shiyao Liu, Yi Fan, Lin Gao, Yun Ding","doi":"10.1186/s12903-025-06598-8","DOIUrl":"https://doi.org/10.1186/s12903-025-06598-8","url":null,"abstract":"<p><strong>Background: </strong>Studies have assessed the impact of Invisalign on maxillary molar distalization; however, varying results were reported.</p><p><strong>Methods: </strong>By using the iTero intraoral laser scanner to obtain three-dimensional (3D) digital models and using the palatal area for the registration of models, the position and angulations of the maxillary first molar (U6) and second molar (U7) were determined before treatment (T0), after U7 distalization (T1) and after U6 distalization (T2). In addition, the rotation angle and vertical changes of U6 and U7, and the sagittal and torque changes of the maxillary central incisor (U1) were determined from T0 to T2.</p><p><strong>Results: </strong>The U6 was moved distally from T0 to T1, T1 to T2, and T0 to T2, by 0.91 ± 0.80 mm, 0.80 ± 0.49 mm, and 1.71 ± 0.89 mm, respectively. Similarly, the U7 was moved by 2.25 ± 1.30 mm, -0.21 ± 0.78 mm, and 2.04 ± 1.16 mm, respectively. From T0 to T2, the U6 and U7 molars were distally tipped by angles of -5.20 ± 2.62° and - 5.35 ± 4.19°, respectively. Molar intrusion and loss of anterior anchorage were also observed.</p><p><strong>Conclusions: </strong>Invisalign can achieve maxillary molar distalization primarily through tipping movement, often accompanied by decreased angulation control and anterior anchorage loss, which requires additional auxiliaries to strengthen anchorage.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1232"},"PeriodicalIF":2.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144697622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Patient-reported outcome measures comparing povidone iodine rinse and chlorhexidine rinse for dental implant therapy: a randomized controlled trial.","authors":"Jiaxian Chen, Zhenqi Chen, Qi Yan, Ruikang Yin, Yi Feng, Li Wang","doi":"10.1186/s12903-025-06560-8","DOIUrl":"10.1186/s12903-025-06560-8","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate patient-reported outcome measures (PROMs) of povidone-iodine rinse and chlorhexidine rinse for patients undergoing dental implant treatments, as well as their bacteriostatic efficacy.</p><p><strong>Materials and methods: </strong>Patients needing implant or bone augmentation surgery were randomized into two groups: povidone-iodine(PVP-I) and chlorhexidine(CHX). On the first day after surgery, pain levels were assessed by Numerical Rating Scale (NRS) to compare the two mouthwashes. At two weeks post-surgery, wound healing was evaluated using the early wound healing index. Finally, patient-reported outcome measures (PROMs) were employed to compare each mouthwash's flavor, texture, and whether it caused irritation or mucosal staining. The significance of intergroup differences was tested using both an intention to treat and a per-protocol analysis.</p><p><strong>Results: </strong>A total of 83 patients(with a median age of 43, 49 females) were enrolled and randomized. In general, both rinses were similarly favorable in terms of patient comfort. Notably, the postoperative pain NRS was significantly lower in the PVP-I group (1.68 ± 0.82) than in the control group (2.55 ± 1.38, p < 0.01). Regarding to wound healing, there was no significant difference in the Early Healing Index (EHI) between the two groups (Z = 0.351, p = 0.725). Regarding PROMs, at day 7, the swelling reduction was significantly greater in the PVP-I group (p = 0.031). Additionally, fewer participants in the PVP-I group (7%) reported mucosal irritation compared to the CHX group (29%) (p < 0.05), while other PROMs showed no significant differences in both groups.</p><p><strong>Conclusions: </strong>Within the scope of this trial, PVP-I rinse demonstrated superior patient comfort (significantly lower postoperative pain intensity, less mucosal irritation, and greater swelling reduction at day 7) compared to CHX rinse, though both rinses showed comparable wound healing outcomes. PVP-I may serve as an alternative for dental implant therapy, but all mouthrinses should be used judiciously under clinical guidance.</p><p><strong>Trial registration: </strong>The study protocol was registered at Chinese Clinical Trial Registry ( www.chictr.org.cn ) under registration number ChiCTR2500098491 on 10/03/2025 (retrospectively registered).</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1233"},"PeriodicalIF":2.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144697623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and psychometric evaluation of the dental care attitudes scale (DCAS).","authors":"Márton Lukács, Balázs Fábián, Gábor Papp, Antal Bugán, István Varga","doi":"10.1186/s12903-025-06655-2","DOIUrl":"https://doi.org/10.1186/s12903-025-06655-2","url":null,"abstract":"<p><strong>Background: </strong>This study describes the development and assessment of the reliability and validity of the Dental Care Attitudes Scale (DCAS), a new instrument for the measurement of attitudes towards dental care services.</p><p><strong>Methods: </strong>Scale development employed qualitative and quantitative research methods. The initial set of items was developed from the transcripts of semi-structured interviews conducted with 16 dental patients. The psychometric properties of the DCAS were refined using an initial sample of 132 adults, and then a second sample of 744 participants (non-clinical sample of adults, dental students, and dentists). The five-factor structure was confirmed via CFA in the adult non-clinical sample (n = 527). Reliability was assessed by Cronbach's alpha values. Validity was assessed by examining the correlation coefficients of DCAS scores with established dental health scales, including the Dental Fear Survey, Dental Anxiety Scale, and Dental Belief Survey. Group differences were assessed by Mann-Whitney U and Kruskal-Wallis tests.</p><p><strong>Results: </strong>The final measure was found to have 17 items, and five factors: Environment, Anesthesia, Delay, Social Status, and System-Related Dissatisfaction. CFA showed good fit (CMIN/DF = 2.11; CFI = 0.94; RMSEA = 0.046), and Cronbach's alpha ranged from 0.66 to 0.78. The association of the DCAS subscales with other measures were all in line with theoretical expectations, indicating good convergent and divergent validity.</p><p><strong>Conclusion: </strong>The Dental Care Attitudes Scale is a reliable and valid instrument for assessing attitudes towards dental care. The DCAS identified several attitudes that may hinder dental care attendance and dentist-patient cooperation. By understanding these attitudes, which the DCAS can measure, dentists can address potential issues in clinical practice and improve patient care.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1235"},"PeriodicalIF":2.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144697621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of double-layer application techniques on the dentin micro-tensile bond strength of universal adhesives.","authors":"Gülşah Tonga, Hüseyin Hatırlı, Kübra Bahar","doi":"10.1186/s12903-025-06617-8","DOIUrl":"https://doi.org/10.1186/s12903-025-06617-8","url":null,"abstract":"<p><strong>Background: </strong>This study aimed to evaluate the immediate and 6-month dentin micro-tensile bond strength (µTBS) of three universal adhesives applied using different double-layer application techniques.</p><p><strong>Methods: </strong>Sixty-five human molar teeth were divided into 13 groups (n = 5) based on adhesive systems and application procedures. Three universal adhesives (G-Premio Bond, GC Corp.; GP, OptiBond Universal, Kerr; OB and Single Bond Universal, 3 M ESPE; SB) and a two-step self-etch adhesive (Clearfil SE Bond, Kuraray Noritake Dental; CSE) were tested. Universal adhesives were applied according to the manufacturer's instructions-(SL-MI) or three different double-layer application procedures: (1) the first adhesive layer was applied without either air thinning or light curing-(DL1), (2) air thinning without light curing the first layer-(DL2), (3) with air thinning and polymerisation each layer-(DL3). The two-step self-etch group was applied according to the manufacturer's instructions. µTBS was measured immediately, after 3 months and 6 months of water storage. Statistical analyses were conducted using Three-Way ANOVA (p< 0.05).</p><p><strong>Results: </strong>For the immediate and 3-month water storage of SB and GP, the highest µTBS values were observed in Group DL2, while for OB, Group DL3 exhibited the highest µTBS values (p< 0.05). After 6 months of water storage, differences among the application procedures were not significant for GP and OB (p> 0.05). The two-step self-etch system demonstrated higher µTBS than all universal adhesive systems at all test periods (p< 0.05).</p><p><strong>Conclusion: </strong>The application of universal adhesives in two layers, particularly by thinning the first layer with air and polymerising after the second layer, positively affects immediate and 3-month µTBS. However, the benefits of double-layer application on 6-month µTBS appear to be material dependent.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1231"},"PeriodicalIF":2.6,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144688832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the accuracy of digital impressions obtained with confocal microscopy and structured light triangulation systems in pediatric patients with different mouth opening: an in vitro study.","authors":"Hamit Tunç","doi":"10.1186/s12903-025-06640-9","DOIUrl":"10.1186/s12903-025-06640-9","url":null,"abstract":"","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1225"},"PeriodicalIF":2.6,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12281700/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144681980","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":"Evaluation of a Three-dimensional printable and two CAD/CAM hybrid resin materials used as permanent single tooth restoration: An in-Vitro study.","authors":"Noha Saadoun, Mohamed Sherif Mohamed Salah Farag, Rania El-Saady Badawy","doi":"10.1186/s12903-025-06544-8","DOIUrl":"https://doi.org/10.1186/s12903-025-06544-8","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate and compare three commercially available hybrid resin materials used for additive and subtractive production (CAD/CAM applications) of permanent single-tooth restorations.</p><p><strong>Materials and methods: </strong>One-hundred and twenty-five bar-shaped specimens (14 mm length, 2 mm width, and 2 mm thickness) of 3 different hybrid resin materials were used in this study, being classified into 5 groups (n = 25). Group I: Lava Ultimate, group II: Vita Enamic, group III: Flexcera Smile Ultra⁺ A, group IV: Flexcera Smile Ultra⁺ B and group V: Flexcera Smile Ultra⁺ C. Lava Ultimate and Vita Enamic specimens were prepared with a low-speed water-cooled diamond microsaw. A digital light processing 3D printer was utilized to print Flexcera Smile Ultra⁺ specimens of 3 different printing angles (0, 45, 90 angles). Specimens were investigated regarding degree of conversion (DC), surface roughness, flexural strength (FS) & modulus (FM) and fractographic analysis. The collected data was tabulated and subjected to statistical analysis. One Way ANOVA test was used to analyze data statistically.</p><p><strong>Results: </strong>Flexcera Smile Ultra⁺ B group showed the highest statistically DC value (46.40). Vita Enamic group showed the highest statistically surface roughness value (0.360). Lava Ultimate group showed the highest statistically FS value (169.87), however Vita Enamic group showed the highest statistically FM value (13.45). Scanning electron microscope images of fractured specimens revealed a compression curl in the upper part and the fracture origin in the lower portion of the surface, which denotes specimens bending. Microcracks voids, arrest lines and hackle lines are also detected. Fractured specimens showed different crack propagation behaviors.</p><p><strong>Conclusions: </strong>Different printing angles (orientations) strongly affected degree of conversion, flexural strength and modulus of the 3D printed material. FS and FM of the 3D printed material were lower than those of CAD/CAM blocks. The different groups showed variable degrees of surface roughness. The fracture surfaces of the different groups revealed common features, indicating bending and showing different crack pathways.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1228"},"PeriodicalIF":2.6,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144688833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ChatGpt's accuracy in the diagnosis of oral lesions.","authors":"Pedram Hajibagheri, Sahba Khosousi Sani, Mohammad Samami, Rasoul Tabari-Khomeiran, Kiana Azadpeyma, Mohammad Khosousi Sani","doi":"10.1186/s12903-025-06582-2","DOIUrl":"10.1186/s12903-025-06582-2","url":null,"abstract":"<p><strong>Aim: </strong>ChatGPT, a large language model (LLM) developed by OpenAI, is designed to generate human-like responses through the analysis of textual data. This study aimed to assess the accuracy and diagnostic capability of ChatGPT-4 in answering clinical scenario-based questions regarding oral lesions.</p><p><strong>Methods: </strong>The study included 133 multiple-choice questions (MCQs), each consisting of five possible answers, randomly selected from the Clinical Guide to Oral Disease. Two oral medicine specialists reviewed the answers in the book to ensure accuracy. A general dentist categorized the questions into three levels of difficulty, and two oral medicine specialists validated these categorizations. At each level of difficulty, 37 questions were randomly selected. Consequently, the final questionnaire, consisting of a total of 111 questions categorized by difficulty level, was prepared. The process of asking questions began using the ''new message'' command, to minimize potential bias (influence of prior answers), the researchers manually cleared the chat history before presenting each new question.</p><p><strong>Result: </strong>ChatGPT-4.0 demonstrated an accuracy rate of 97% for easy questions, 86.5% ± 34.6% for medium-level questions, and 78.4% ± 41.7% for difficult questions, with an overall accuracy rate of 87.4% ± 33.3.</p><p><strong>Conclusion: </strong>Although ChatGPT-4.0 demonstrated satisfactory accuracy in answering clinical questions, its responses should not be exclusively relied upon for diagnostic purposes. Instead, the model should be utilized as a complementary tool under the supervision of clinicians in the diagnosis of oral lesions.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1229"},"PeriodicalIF":2.6,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12281746/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144681979","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":"PXseg: automatic tooth segmentation, numbering and abnormal morphology detection based on CBCT and panoramic radiographs.","authors":"Raokaijuan Wang, Fangyuan Cheng, Guangsheng Dai, Jiayu Zhang, Chengmin Fan, Jinghong Yu, Juan Li, Fulin Jiang","doi":"10.1186/s12903-025-06356-w","DOIUrl":"10.1186/s12903-025-06356-w","url":null,"abstract":"<p><strong>Objective: </strong>PXseg, a novel approach for tooth segmentation, numbering and abnormal morphology detection in panoramic X-ray (PX), was designed and promoted through optimizing annotation and applying pre-training.</p><p><strong>Methods: </strong>Derived from multicenter, ctPXs generated from cone beam computed tomography (CBCT) with accurate 3D labels were utilized for pre-training, while conventional PXs (cPXs) with 2D labels were input for training. Visual and statistical analyses were conducted using the internal dataset to assess segmentation and numbering performances of PXseg and compared with the model without ctPX pre-training, while the accuracy of PXseg detecting abnormal teeth was evaluated using the external dataset consisting of cPXs with complex dental diseases. Besides, a diagnostic testing was performed to contrast diagnostic efficiency with and without PXseg's assistance.</p><p><strong>Results: </strong>The DSC and F1-score of PXseg in tooth segmentation reached 0.882 and 0.902, which increased by 4.6% and 4.0% compared to the model without pre-training. For tooth numbering, the F1-score of PXseg reached 0.943 and increased by 2.2%. Based on the promotion in segmentation, the accuracy of abnormal tooth morphology detection exceeded 0.957 and was 4.3% higher. A website was constructed to assist in PX interpretation, and the diagnostic efficiency was greatly enhanced with the assistance of PXseg.</p><p><strong>Conclusions: </strong>The application of accurate labels in ctPX increased the pre-training weight of PXseg and improved the training effect, achieving promotions in tooth segmentation, numbering and abnormal morphology detection. Rapid and accurate results provided by PXseg streamlined the workflow of PX diagnosis, possessing significant clinical application prospect.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1230"},"PeriodicalIF":2.6,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12281714/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144681983","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}