Oral and maxillofacial surgery最新文献

{"title":"A new radiological classification of the mental foramen in the edentulous mandible: clinical and surgical implications.","authors":"Bruno Scognamiglio, Alfonso Acerra, Mario Caggiano, Isabella De Rubertis, Francesco Giordano","doi":"10.1007/s10006-026-01623-8","DOIUrl":"10.1007/s10006-026-01623-8","url":null,"abstract":"<p><strong>Background: </strong>The purpose of this cross-sectional study was to classify different patterns of mental nerve emergence (MNE) in edentulous mandible using cone beam computed tomography (CBCT) scans.</p><p><strong>Methods: </strong>Seventy-five consecutive patients, each contributing with one hemimandible and candidates for implant surgery, were recruited at Dental Unit of University Hospital of Salerno. CBCT scans were analyzed by two calibrated examiners to assess the distance between the bone crest and the mental foramen (BC-MF), mandibular bone resorption according to the Cawood-Howell (C-H) classification and the pattern of MNE. Inter-rater agreement was evaluated using weighted Cohen's kappa. Descriptive statistics were calculated and non-parametric tests were used to compare BC-MF distances among C-H categories and MNE classes, as well as to assess associations between categorical variables.</p><p><strong>Results: </strong>Significant differences were observed among MNE-Classes with significantly higher BC-MN distance in Class I compared with Classes II and III, and in Class II compared with Class III (p < 0.05). Moreover, a statistically significant association between the MNE class and the C-H classification (p < 0.001) was highlighted.</p><p><strong>Conclusions: </strong>Soft tissue management in the edentulous mandible requires particular attention to reduce the risk of MN injury, especially in MNE Class II and III. A statistically significant association was observed between MNE patterns and C-H classes, with higher emergence classes associated with a reduced BC-MF distance. The proposed radiological classification may support preoperative surgical planning by facilitating the identification of different patterns of MNE.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13522031/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148842225","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":"Mandibular reconstruction with fibula free flap: a comparative analysis of clinical outcomes of CAD/CAM-assisted surgery versus model-assisted conventional technique.","authors":"C Giraudi, Ylenia Gugliotta, F Secco, A Novaresio, M Fasolis, G Ramieri","doi":"10.1007/s10006-026-01630-9","DOIUrl":"10.1007/s10006-026-01630-9","url":null,"abstract":"<p><strong>Objectives: </strong>The aim of this study was to compare clinical and patient-reported outcomes of mandibular reconstruction with fibula free flap (FFF) performed using model-assisted conventional technique versus computer-aided design/computer-aided manufacturing (CAD/CAM) with virtual surgical planning (VSP).</p><p><strong>Materials and methods: </strong>Patients who underwent microvascular mandibular reconstruction with FFF between January 2016 and December 2023 were retrospectively reviewed. Inclusion criteria were age ≥ 18 years, segmental mandibular resection, and a minimum follow-up of 12 months. Patients were divided into two groups: model-assisted conventional reconstruction (Group A) and CAD/CAM-assisted reconstruction with VSP (Group B). Demographic, pathological, and surgical variables were collected. Morphological and functional outcomes were assessed using validated instruments including the Katsuragi Scale, FACE-Q Aesthetics, EORTC QLQ-H&N43, MD Anderson Dysphagia Inventory (MDADI), and Speech Handicap Index (SHI).</p><p><strong>Results: </strong>Thirty-two patients were included (11 in Group A, 21 in Group B). CAD/CAM-assisted reconstruction showed significantly better aesthetic outcomes according to both patient and surgeon evaluations with Katsuragi Scale (p = 0.0001). FACE-Q Satisfaction with Surgical Outcome scores were significantly higher in Group B (p = 0.02). Patients treated with CAD/CAM also reported significantly fewer self-reported speech-related disturbances according to the SHI (p = 0.01). Other functional measures showed favourable trends for CAD/CAM reconstruction but did not reach statistical significance.</p><p><strong>Conclusions: </strong>CAD/CAM-assisted reconstruction was associated with improved aesthetic outcomes, greater patient satisfaction, and better speech-related function compared with conventional techniques.</p><p><strong>Clinical relevance: </strong>Digital surgical planning may improve the precision and predictability of mandibular reconstruction and was associated with better patient-reported outcomes, particularly in speech-related function.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13506611/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148820952","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":"Comparative evaluation of acute stress and clinical efficacy between piezosurgery and conventional rotatory technique in transalveolar extraction of impacted mandibular third molars-A randomized controlled trial.","authors":"Vigneshwaran Ravichandran, Yuvaraj Vaithilingam, Suresh Kumar Ganesan, Balaji Ts, Nitin Babu","doi":"10.1007/s10006-026-01625-6","DOIUrl":"10.1007/s10006-026-01625-6","url":null,"abstract":"<p><strong>Background: </strong>Surgical extraction of impacted mandibular third molars is commonly associated with postoperative pain, swelling, and trismus. Conventional rotatory osteotomy, though widely used, may cause thermal and mechanical trauma. Piezosurgery has emerged as a minimally invasive alternative that may improve clinical outcomes and reduce physiological stress, which can be objectively assessed using salivary biomarkers.</p><p><strong>Purpose: </strong>To compare acute stress response and clinical efficacy between piezosurgery and conventional rotatory technique in transalveolar extraction of impacted mandibular third molars.</p><p><strong>Study design, setting, sample: </strong>A prospective randomized controlled clinical trial was conducted on 60 patients (aged 19-40 years) requiring transalveolar extraction. Participants were randomly allocated into piezosurgery (n = 30) and conventional rotatory groups (n = 30).</p><p><strong>Predictor/exposure: </strong>Type of osteotomy technique (piezosurgery vs conventional rotatory).</p><p><strong>Main outcome measures: </strong>Primary outcomes were salivary cortisol and salivary alpha-amylase levels. Secondary outcomes included postoperative pain (VAS), facial swelling, mouth opening, duration of surgery, and patient comfort.</p><p><strong>Covariates: </strong>Age, gender, impaction difficulty (Pederson's difficulty index), type of impaction, and duration of surgery.</p><p><strong>Analyses: </strong>Data were analyzed using an independent t-test with a significance level of p < 0.05.</p><p><strong>Results: </strong>Postoperative pain showed no significant difference between groups (p > 0.05). The piezosurgery group demonstrated significantly reduced postoperative swelling with a mean difference of approximately 2.07 mm (95% CI: -3.21 to -0.93, p = 0.001) and reduced trismus with improved mouth opening (mean difference: 0.31-0.70 cm across time points, 95% CI: approximately 0.19 to 0.88, p < 0.001). Additionally, higher patient comfort scores (mean difference: 0.87, 95% CI: 0.59 to 1.14, p < 0.001) and lower postoperative salivary cortisol and alpha-amylase levels (p < 0.001) were observed in the piezosurgery group. However, surgical duration was significantly longer in the piezosurgery group.</p><p><strong>Conclusions and relevance: </strong>Piezosurgery offers improved postoperative outcomes and reduced physiological stress compared to conventional techniques, despite longer operative time, making it a valuable alternative in third molar surgery.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148836015","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":"Bone regeneration after transcrestal sinus lift using nanoscale super-hydrophilic versus standard implant surfaces: a single-center, 12-month, parallel controlled clinical trial.","authors":"Luigi Canullo, Domenico Baldi, Paolo Pesce, Vito Carlo Alberto Caponio, Alessio Triestino, Maria Menini","doi":"10.1007/s10006-026-01627-4","DOIUrl":"10.1007/s10006-026-01627-4","url":null,"abstract":"<p><strong>Objectives: </strong>Wettability of dental implants surface might be an additional key variable in the regeneration process and osseointegration. The aim of the study was to evaluate the effect of a new nanoscale roughness, combined with super-hydrophilic surface on bone volume change after trans-crestal sinus floor lift procedure for implant positioning.</p><p><strong>Materials and methods: </strong>The study was reported according to SPIRIT guidelines. A 12-month, single-center, parallel group clinical trial was conducted to compare changes in bone regeneration and crestal bone level as shown on x-ray, following trans-crestal sinus floor lift using a collagenated hydroxyapatite graft and insertion of single dental implants with two different surfaces: moderately rough surface implants (Control Group - CG) and nanoscale super-hydrophilic surface implants (Test Group - TG). Radiographic bone volume and maximum height of regenerated bone as well as peri-implant crestal bone level were evaluated immediately following implant insertion and after 12 months. A multivariate regression model was built to address the impact of surface characteristics and clinical variables on the outcome.</p><p><strong>Results: </strong>The study was completed by 25 participants (12 in the TG and 13 in the CG). CG achieved a volume change of 94.54mm³ (SD 70.24), while the TG increased by 207.41mm³ (SD 168.10) Focusing on bone height gain, CG presented 6.25 mm (SD 1.88), compared to 5.02 mm (SD 1.71) in the TG. For both outcomes, no statistically significant differences were found between the two groups (p = 0.087 for bone volume change; p = 0.123 for bone height gain). Multivariate linear regression models only partially explained observed variance (respectively 8.6 and 35.4%), resulting in non-statistically significant predictions.</p><p><strong>Discussion: </strong>Despite the trend of a higher bone volume observed in the hydrophilic surface group, taking into consideration all the variables, this study did not reveal any significant differences in terms of bone regeneration between groups.</p><p><strong>Conclusion: </strong>Within the limitations of this study, implants with a nanoscale super-hydrophilic surface did not result in significantly greater bone regeneration than conventional moderately rough implants following transcrestal sinus floor elevation, although a trend toward increased bone volume was observed. Further clinical studies are required to clarify the potential regenerative advantages of hydrophilic implant surfaces.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13518452/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148836052","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":"The role of elective neck dissection in parotid acinic cell carcinoma: a systematic review.","authors":"Sai Pabbati, Daniel Cook, James Heaton, Samuel Freeman, Manavaroa Taripo, Danilo Carluccio, Omar Breik","doi":"10.1007/s10006-026-01633-6","DOIUrl":"10.1007/s10006-026-01633-6","url":null,"abstract":"<p><strong>Purpose: </strong>Acinic cell carcinoma (AciCC) is a rare parotid malignancy treated by parotidectomy with or without a neck dissection depending on clinical or radiographic neck node involvement. The role of elective neck dissection (END) in the clinically node-negative neck, intended to address occult lymph node metastases (OLNM), remains contentious.</p><p><strong>Methods: </strong>This review was conducted per PRISMA 2020. Searches through PubMed, EMBASE, and CINAHL were conducted up to May 2025. Data extraction focused on survival, recurrence outcomes and OLNM. Risk of bias was assessed using the Newcastle-Ottawa Scale.</p><p><strong>Results: </strong>From 741 screened articles, 13 retrospective cohort studies were included. Across 2,646 parotid AciCC cases, 788 underwent END, 77 demonstrating OLNM. Marked heterogeneity was observed among studies, with reported OLNM rates ranging from 0% to 37.5% and a weighted mean of 9.8%. High-grade transformation was associated with poorer survival; advanced T-stage showed a less consistent association, and grade-stratified nodal differences were generally based on small samples and not statistically significant.</p><p><strong>Conclusion: </strong>Routine END is not supported in low-grade, early-stage AciCC. High-grade transformation is an adverse prognostic factor; the independent value of advanced T-stage is less certain, resting largely on some single cohort studies. END has not been shown to improve survival, and comparisons are confounded by indication. Any role in higher-risk disease remains uncertain and should be individualised rather than routine. Multi-institutional registries with standardised reporting are needed to strengthen the evidence.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13506562/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148820959","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":"Platelet-rich fibrin after mandibular third molar extraction: an umbrella review of systematic reviews and meta-analyses.","authors":"Nicolás Monsalves Morales, Felipe Estrada Cáceres, Martín Sanchez Varela","doi":"10.1007/s10006-026-01624-7","DOIUrl":"10.1007/s10006-026-01624-7","url":null,"abstract":"<p><strong>Purpose: </strong>To synthesize evidence on platelet-rich fibrin (PRF) and its derivatives for postoperative outcomes after mandibular third molar extraction, and to re-evaluate the methodological quality of available systematic reviews against the prior umbrella review (Yang 2024).</p><p><strong>Methods: </strong>PubMed, Cochrane CDSR, and Epistemonikos were searched without language restriction up to May 2026. Systematic reviews evaluating PRF for mandibular third molar extraction outcomes were included. Two reviewers independently screened, extracted data, applied AMSTAR-2 under the strict algorithm, and computed the corrected covered area (CCA). Yang 2024 was excluded as comparator.</p><p><strong>Results: </strong>Nineteen systematic reviews were included, four post-dating Yang's cutoff. PRF consistently reduced alveolar osteitis (RR/OR 0.22-0.43) and postoperative pain (SMD - 0.38 to - 1.84). In the highest-quality network meta-analysis (Costa 2023), L-PRF effects on pain remained below the ~ 10-mm minimum clinically important difference (MCID), whereas A-PRF and CGF exceeded it. Effects on swelling were large but highly heterogeneous; effects on trismus and healing were derivative-dependent. Strict AMSTAR-2 classified 1/19 reviews as high, 1/19 as moderate, 8/19 as low, and 9/19 as critically low confidence. The CCA was 12.77% (high overlap). None of the nine reviews previously rated high by Yang reached high confidence in our evaluation.</p><p><strong>Conclusion: </strong>PRF provides clinically meaningful benefits after mandibular third molar extraction, particularly for alveolar osteitis prevention and early pain control with A-PRF and CGF. However, the methodological quality of the underlying systematic-review evidence is substantially lower than previously characterized, and recommendations should be calibrated accordingly.</p><p><strong>Protocol registration: </strong>Open Science Framework (OSF), https://doi.org/10.17605/OSF.IO/ED4MJ , registered 21 May 2026.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148805321","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":"Morphometric analysis of craniofacial skeletal and masticatory muscle morphology in patients with temporomandibular disorders: An observational study.","authors":"Devanshu Devanshu, Rudra Deo Kumar, Shivendra Choudhary, Upasna Sinha, Sreenath P, Sibgutulah Rashid","doi":"10.1007/s10006-026-01626-5","DOIUrl":"10.1007/s10006-026-01626-5","url":null,"abstract":"<p><strong>Purpose: </strong>This study evaluated craniofacial skeletal and masticatory muscle morphology in patients with temporomandibular disorders (TMD), compared these features between dislocation/subluxation and internal derangement subgroups, assessed muscle-bone relationships, and explored potential anatomical factors relevant to future TMD risk-assessment models.</p><p><strong>Methods: </strong>A prospective cross-sectional observational study was conducted in 79 patients with TMD, including 27 with dislocation/subluxation (Group I) and 52 with internal derangement (Group II). Craniofacial skeletal measurements and cross-sectional areas (CSA) of the masticatory muscles were assessed on non-contrast computed tomography (NCCT) face. Measurements were compared with published reference values and between the two groups. Statistical analysis included descriptive statistics, t-tests, and Pearson correlation (α = 0.05).</p><p><strong>Results: </strong>Coronoid process length and angulation were significantly reduced in both groups (P < 0.0001), with lower values in Group I than Group II (P < 0.0001). Temporalis muscle CSA was decreased, whereas lateral pterygoid muscle CSA and pterygoid plate length were increased predominantly in internal derangement. In Group I, temporalis CSA correlated strongly with coronoid length (r = 0.74) and angulation (r = 0.70). Lateral pterygoid muscle CSA demonstrated significant positive correlations with lateral pterygoid plate length in both Group I (r = 0.39) and Group II (r = 0.48).</p><p><strong>Conclusion: </strong>Distinct craniofacial skeletal and masticatory muscle patterns were observed across the TMD subgroups. The observed differences and muscle-bone relationships provide further insight into the anatomical variations associated with TMJ dysfunction and may support future studies investigating their relevance in assessment, risk evaluation, and individualized management.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148805324","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":"Mucoadhesive patch versus benzocaine gel for reducing injection pain: a split-mouth randomized clinical trial.","authors":"Rasoul Sahebalam, Azarnoosh Sheibani, Hossein Bagheri, Majid Eshghpour, Ehsan Zahabi, Nikoo Rajabi, Melika Hoseinzadeh","doi":"10.1007/s10006-026-01615-8","DOIUrl":"10.1007/s10006-026-01615-8","url":null,"abstract":"<p><strong>Background: </strong>Minimizing pain during dental injections is essential for enhancing patient comfort and reducing anxiety-driven treatment avoidance.</p><p><strong>Purpose: </strong>To evaluate a novel, engineered bilayer mucoadhesive patch designed to optimize drug bioavailability and reduce injection pain compared to a benzocaine gel.</p><p><strong>Study design, setting, and sample: </strong>Split-mouth randomized clinical trial at Mashhad University of Medical Sciences involving 36 healthy patients requiring bilateral maxillary dental extractions.</p><p><strong>Predictor variable: </strong>The primary predictor was the delivery format of the topical anesthetic agent. The novel 20% benzocaine mucoadhesive patch featured a bilayer design: a base layer composed of a chitosan-gelatin-glycerin matrix, and an adhesive layer containing sodium carboxymethylcellulose, gelatin, pectin, 20% benzocaine (ethyl 4-aminobenzoate), and methylene blue. Participants randomly received either 20% benzocaine gel (applied for 30 s) or the 20% benzocaine mucoadhesive patch (applied for 10 min) on buccal and palatal sites of the right or left side. Local anesthesia was administered following a 10-minute washout interval between the left and right sides.</p><p><strong>Main outcome variable(s): </strong>Pain was quantified via the Sound, Eye, Motor (SEM) scale and the 11-point Numeric Rating Scale (NRS-11).</p><p><strong>Covariates: </strong>Covariates included age, sex, and baseline anxiety level, assessed via the Beck Anxiety Inventory.</p><p><strong>Analyses: </strong>Shapiro-Wilk, Wilcoxon signed-rank, Mann-Whitney U, and Spearman correlation tests (α = 0.05).</p><p><strong>Results: </strong>NRS-11 scores were significantly lower in the patch group for both buccal and palatal injections (P < 0.05). SEM scores were significantly lower in the patch group at the palatal site (P = 0.011), but not at the buccal site (P = 0.075). Sex, age, and baseline anxiety level were not associated with pain scores.</p><p><strong>Conclusions and relevance: </strong>The 20% benzocaine mucoadhesive patch resulted in lower self-reported pain during both buccal and palatal injections, and lower observer-rated pain during palatal injections, compared to the 20% benzocaine gel.</p><p><strong>Trial registration: </strong>Iranian Registry of Clinical Trials (IRCT) IRCT20230125057218N1. Registered on 10 October 2023, https//en.irct.ir/trial/71,206.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148805353","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":"The impact of clockwise and counterclockwise Le Fort I movements combined with bilateral sagittal split osteotomy on nasal morphology.","authors":"Robin Hartmann, Marc Schoebel, Katharina Obermeier, Fabian Geyer, Maximilian Geyer, Wenko Smolka, Sven Otto, Waltraud Waiss, Tobias Ettl","doi":"10.1007/s10006-026-01621-w","DOIUrl":"https://doi.org/10.1007/s10006-026-01621-w","url":null,"abstract":"<p><strong>Purpose: </strong>Orthognathic surgery is known to induce measurable alterations in nasal morphology. This study retrospectively assessed pre- and postoperative three-dimensional (3D) surface models (SMs) to evaluate nasal soft-tissue changes associated with clockwise (CW) and counterclockwise (CCW) Le Fort I movements combined with bilateral sagittal split osteotomy (BSSO).</p><p><strong>Methods: </strong>Fifty-six patients (23 CW, 33 CCW) who underwent Le Fort I osteotomy with BSSO between January 2016 and February 2020 were included. 3D SMs were obtained 1 day preoperatively and 6 weeks postoperatively using the Vectra M5 stereophotogrammetry system (Canfield Scientific, USA). Seventeen anthropometric nasal parameters were measured with OnyxCeph3 (Image Instruments, Germany).</p><p><strong>Results: </strong>In the overall cohort, 8 of 17 nasal parameters showed significant postoperative changes. Most notably, transverse nasal dimensions increased, while nasal height and nasal dorsum length decreased. Subgroup analyses revealed that, after Holm-Bonferroni adjustment, 2 parameters remained significant in the CW group and 6 in the CCW group. However, direct between-group comparisons revealed no significant differences in the magnitude of postoperative changes.</p><p><strong>Conclusion: </strong>Le Fort I osteotomy combined with BSSO consistently alters nasal morphology, particularly by widening the alar and subalare regions and reducing nasal height. While both CW and CCW rotations produced measurable anthropometric changes, direct between-group comparisons showed no significant differences in the magnitude of postoperative changes.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13486024/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148805389","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 course study of postoperative recovery of neurosensory disturbance after inferior alveolar nerve transection during sagittal split osteotomy.","authors":"Tomonari Kajita, Shinnosuke Nogami, Yuki Sugai, Mai Yazaki, Hikari Suzuki, Kensuke Yamauchi","doi":"10.1007/s10006-026-01619-4","DOIUrl":"10.1007/s10006-026-01619-4","url":null,"abstract":"<p><strong>Purpose: </strong>Inferior alveolar nerve transection (IANT) is a severe complication of sagittal split osteotomy (SSO). This study aimed to retrospectively evaluate the long-term sensory recovery in patients who experienced intraoperative IANT compared to those who did not.</p><p><strong>Materials and methods: </strong>This retrospective cohort study reviewed patients who underwent SSO from 2016 to 2022. Patients were divided into Group A (with IANT, 11 sides) and Group B (without IANT, 151 sides). Sensory perception was assessed using the Semmes-Weinstein (SW) test, static two-point discrimination (s-2PD) test, and a Numerical Rating Scale (NRS) at preoperative baseline and at 1, 3, 6, and 12 months postoperatively. Mann-Whitney U and Dunnett's tests were used for statistical analysis (p < .05).</p><p><strong>Results: </strong>Group A demonstrated significantly worse sensory outcomes than Group B on all tests at all postoperative time points (p < .01). In Group B, SW and s-2PD values were significantly worse than baseline at 1 and 3 months but showed no significant difference at 6 and 12 months. In contrast, Group A outcomes remained significantly impaired compared to their own preoperative baseline throughout the 12-month follow-up.</p><p><strong>Conclusions: </strong>Complete IANT during SSO, even with immediate nerve repair, results in a substantial and long-term persistent neurosensory deficit. While patients without nerve transection typically recover baseline sensory perception by 6 months, those with IANT experience only minimal improvement and remain significantly impaired at a year post-surgery.</p>","PeriodicalId":520733,"journal":{"name":"Oral and maxillofacial surgery","volume":"30 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148764219","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}