International journal of oral and maxillofacial surgery最新文献

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The prognostic value of pre-treatment sarcopenia in overall survival in head and neck cancer patients: a systematic review. 治疗前肌少症对头颈部癌症患者总生存期的预后价值:系统综述。
International journal of oral and maxillofacial surgery Pub Date : 2024-07-26 DOI: 10.1016/j.ijom.2024.07.008
A Syziu, A Schache
{"title":"The prognostic value of pre-treatment sarcopenia in overall survival in head and neck cancer patients: a systematic review.","authors":"A Syziu, A Schache","doi":"10.1016/j.ijom.2024.07.008","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.07.008","url":null,"abstract":"<p><p>The aim of this study was to determine the prognostic value of pre-treatment sarcopenia, defined radiologically (cervical (C3) or lumbar (L3) region), in adult head and neck cancer (HNC) patients undergoing treatment with curative intent. A systematic search of the PubMed and Scopus databases was performed up to March 2024. Inclusion criteria were adult patients with locally advanced HNC, sarcopenia defined radiologically at the C3 and/or L3 level, and patients receiving primary treatment with curative intent. Risk of bias was assessed using the ROBINS-I tool non-randomised studies. Thirty studies involving a total of 6924 adult patients with HNC were included in this review. Pre-treatment sarcopenia was significantly associated with worse overall survival outcomes in 26 of the 30 studies (87%), across all treatment modalities with curative intent. The most frequent sex-specific SMI cut-off values were <52.4 cm<sup>2</sup>/m<sup>2</sup> for males and <38.5 cm<sup>2</sup>/m<sup>2</sup> for females. The findings of this review suggest that sarcopenia is a strong prognostic factor of overall survival in HNC patients undergoing primary curative treatment. Sarcopenia evaluation appears to be a good prognostic marker in the HNC population. Future nutritional interventional studies might focus on reversing the muscle loss and improving overall outcomes in identified sarcopenic individuals.</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141790643","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}
引用次数: 0
Comparison of survival between palliative surgery and no surgery for advanced tongue squamous cell carcinoma: an analysis of SEER data. 晚期舌鳞状细胞癌姑息手术与不手术的生存率比较:SEER 数据分析。
International journal of oral and maxillofacial surgery Pub Date : 2024-07-17 DOI: 10.1016/j.ijom.2024.07.001
Z Ye, G Tan, L Wang, G Shangguan, H Yao, X Xu, H Ye, X Ding
{"title":"Comparison of survival between palliative surgery and no surgery for advanced tongue squamous cell carcinoma: an analysis of SEER data.","authors":"Z Ye, G Tan, L Wang, G Shangguan, H Yao, X Xu, H Ye, X Ding","doi":"10.1016/j.ijom.2024.07.001","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.07.001","url":null,"abstract":"<p><p>The aim of this study was to investigate the survival effect of palliative surgery in advanced tongue squamous cell carcinoma (TSCC). A retrospective analysis of data in the SEER database for 6151 patients with stage III/IV TSCC (American Joint Committee on Cancer (AJCC) staging), diagnosed between 2004 and 2015, was performed. The patients were divided into two groups: palliative surgery and no surgery. Kaplan-Meier and Cox proportional hazards regression analyses were applied to determine risk factors for overall survival (OS) and cancer-specific survival (CSS). A further analysis was performed using 1:1 propensity score matching (PSM) to balance 13 patient variables (sex, age at diagnosis, race, marital status, primary tumour site, SEER stage, AJCC stage, pathological differentiation grade, tumour size, lymph node metastasis, previous lymph node removal, radiotherapy, and chemotherapy). Among the 6151 patients, 706 underwent palliative surgery; the other 5445 did not undergo any kind of surgery. Those who underwent palliative surgery had a higher 5-year survival rate. After PSM, 1274 patients were included in the matched cohort. Multivariate Cox regression analysis showed that patients who underwent palliative surgery had a lower risk of death than those who did not (OS: hazard ratio 0.58, 95% confidence interval 0.49-0.69, P < 0.001; CSS: hazard ratio 0.60, 95% confidence interval 0.49-0.74, P < 0.001). In this comparative study it was found that compared with no surgery, palliative surgery has a positive impact on the survival rate of patients with advanced TSCC.</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141725404","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}
引用次数: 0
Surgically assisted rapid maxillary expansion: current concepts of minimally invasive approaches. 手术辅助快速上颌骨扩张:微创方法的当前概念。
International journal of oral and maxillofacial surgery Pub Date : 2024-07-15 DOI: 10.1016/j.ijom.2024.07.007
M Santagata, G Tartaro, D Guida, S D'Amato, C E Boschetti, F Chirico
{"title":"Surgically assisted rapid maxillary expansion: current concepts of minimally invasive approaches.","authors":"M Santagata, G Tartaro, D Guida, S D'Amato, C E Boschetti, F Chirico","doi":"10.1016/j.ijom.2024.07.007","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.07.007","url":null,"abstract":"<p><p>Studies have consistently shown an association of the Le Fort I osteotomy with undesirable adverse events in the nasolabial region, including lengthening and thinning of the upper lip, a reduction in upper vermilion exposure, and nasal base enlargement. Various minimally invasive techniques have been developed based on knowledge collected over recent decades on the aetiopathogenesis of these aesthetic impairments. The common scope of these techniques is to reduce the damage to the facial soft tissues and achieve a sound and spontaneous healing process, avoiding those procedures that are commonly used to counteract undesirable aesthetic changes. This paper provides a summary of the aetiopathogenesis of these adverse events, as well as an overview of current concepts in minimally invasive surgically assisted rapid maxillary expansion (miSARME).</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141629548","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}
引用次数: 0
Prognostic triad: a novel method for decision-making for adjuvant treatment in stage I-II oral squamous cell carcinoma. 预后三要素:I-II 期口腔鳞状细胞癌辅助治疗决策的新方法。
International journal of oral and maxillofacial surgery Pub Date : 2024-07-13 DOI: 10.1016/j.ijom.2024.07.004
P V Jain, I Mallick, K Manikantan, S Chatterjee, I Arun, P Roy, L Zameer, P Arun
{"title":"Prognostic triad: a novel method for decision-making for adjuvant treatment in stage I-II oral squamous cell carcinoma.","authors":"P V Jain, I Mallick, K Manikantan, S Chatterjee, I Arun, P Roy, L Zameer, P Arun","doi":"10.1016/j.ijom.2024.07.004","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.07.004","url":null,"abstract":"<p><p>This study proposes a scoring system for adjuvant irradiation for stage I/II oral squamous cell carcinoma (OSCC). Derivation cohort (119 patients, operated between 2011 and 2014) and a validation cohort (204 patients, operated between 2016 and 2019) were included. In derivation cohort, on univariate analysis, tumor size >2 cm [3-year Disease Free Survival (DFS) 72.5% vs 95.6%, P = 0.039], lymphovascular invasion (58.3% vs 83.6%, P = 0.024), perineural invasion (75% vs 85.6%, P = 0.013), and depth of invasion ≥0.5 cm (73.8% vs 97.5%, P = 0.017) predicted 3-year DFS. Tongue lesions and poor differentiation were added as poor prognosticators based on previously published reports. Patients were grouped as low risk (<3 risk factors) and high risk (≥3 risk factors), with only high-risk group receiving adjuvant irradiation in validation cohort. Overall, 47/119 (39.5%) patients in the derivation cohort and 50/204 (24.5%) patients in validation cohort received adjuvant irradiation. In derivation cohort, 3-year DFS was 93% and 72.5% in the low and high-risk group, respectively. 3-year DFS was 90.7% and 85.8% in the low and high-risk group, respectively for validation cohort. The proposed scoring system reduced the use of adjuvant irradiation by 38%, with similar DFS.</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141604668","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}
引用次数: 0
Three-dimensional assessment of root changes after Le Fort I osteotomy. Le Fort I 截骨术后牙根变化的三维评估。
International journal of oral and maxillofacial surgery Pub Date : 2024-07-13 DOI: 10.1016/j.ijom.2024.07.003
K A Alqahtani, E Shaheen, C Politis, R Jacobs
{"title":"Three-dimensional assessment of root changes after Le Fort I osteotomy.","authors":"K A Alqahtani, E Shaheen, C Politis, R Jacobs","doi":"10.1016/j.ijom.2024.07.003","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.07.003","url":null,"abstract":"<p><p>The study aim was to assess the volumetric, linear, and morphological changes of the maxillary incisor, canine, and premolar roots following Le Fort I osteotomy. Sixty patients (585 teeth) were included retrospectively from among individuals who underwent combined orthodontics and orthognathic surgery. The study group comprised 30 patients who underwent orthodontics and one-piece Le Fort I osteotomy, while the control group consisted of 30 patients who underwent orthodontics and bilateral sagittal split osteotomy but no maxillary surgery. CBCT scans were obtained at four time points: preoperative, 6 months, 1 year, and 2 years postoperative. A fully automated three-dimensional evaluation protocol was utilized to assess root changes of the maxillary teeth. Significant differences in the apical and middle parts of the teeth were observed between the study and control groups at 1 and 2 years postoperative, with greater percentage changes in the study group (all P < 0.05). Greater root remodelling in the canines, first and second premolars was observed in the study group (all P < 0.005). Spearman correlation analysis indicated a positive relationship between root remodelling and maxillary advancement, with larger advancements contributing to increased root remodelling in the apical and middle root parts (both P < 0.05). These findings can be valuable for surgeons and orthodontists in evaluating root changes.</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141617798","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}
引用次数: 0
Changes in lateral standing posture following orthognathic surgery: a cohort study. 正颌手术后侧向站立姿势的变化:一项队列研究。
International journal of oral and maxillofacial surgery Pub Date : 2024-07-01 DOI: 10.1016/j.ijom.2024.06.011
F Akhlaghi, Z S Torabi, R Tabrizi
{"title":"Changes in lateral standing posture following orthognathic surgery: a cohort study.","authors":"F Akhlaghi, Z S Torabi, R Tabrizi","doi":"10.1016/j.ijom.2024.06.011","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.06.011","url":null,"abstract":"<p><p>Altering neuromuscular and musculoskeletal relationships also affects standing body posture, particularly in the head and neck areas. This prospective cohort study assessed the effects of orthognathic surgery on head posture in the lateral standing view. Thirty-one patients who underwent single-jaw orthognathic mandibular surgery were included. The patients underwent cephalometric and photographic evaluations of their habitual posture before and 6 months after surgery. The craniovertebral angle and Frankfort angle were determined and measured using MB-Ruler software. Mandibular positional changes were also measured by superimposing lateral cephalograms and recording changes in the menton point. All data were analysed by paired t-test. The craniovertebral angle increased significantly in patients with Class II malocclusion (P = 0.001) and decreased significantly in Class III patients (P = 0.004). Furthermore, the Frankfort angle was significantly increased in both Class II (P = 0.005) and Class III (P = 0.012) patients. The tendency towards forward head posture decreased in Class II patients, and the neck posture improved. Conversely, a slight but significant tendency towards a forward head posture was observed in Class III patients after surgery. Furthermore, the natural head position changed in both study groups, leading to a more upright head posture.</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141494640","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}
引用次数: 0
Long-term follow-up of corrective jaw surgery including distraction osteogenesis in 32 patients with juvenile idiopathic arthritis. 对 32 名幼年特发性关节炎患者进行包括牵引成骨术在内的颌骨矫正手术的长期随访。
International journal of oral and maxillofacial surgery Pub Date : 2024-06-29 DOI: 10.1016/j.ijom.2024.06.001
H Krarup, T K Pedersen, P Frid, S E Nørholt
{"title":"Long-term follow-up of corrective jaw surgery including distraction osteogenesis in 32 patients with juvenile idiopathic arthritis.","authors":"H Krarup, T K Pedersen, P Frid, S E Nørholt","doi":"10.1016/j.ijom.2024.06.001","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.06.001","url":null,"abstract":"<p><p>Dentofacial deformity following juvenile idiopathic arthritis (JIA) with temporomandibular joint (TMJ) involvement is associated with functional, aesthetic, and psychosocial impairment. Corrective surgical treatment includes combinations of orthognathic surgeries (OS). The aims of this study were to assess orofacial symptoms, functional and aesthetic status, and stability after OS including mandibular distraction osteogenesis (MDO). A prospective study was conducted of 32 patients with JIA of the TMJ and dentofacial deformities who underwent MDO as the only surgery or in combination with bilateral sagittal split osteotomy, Le Fort I, and/or genioplastybetween 2003 and 2018. Data from clinical examinations and cephalograms performed pre- and postoperative and at long-term (mean 4 years) were analysed. Patients experienced unchanged orofacial symptoms (all P > 0.05), short-term TMJ functional impairment (all P < 0.001), and long-term morphological improvements in SNB angle (P < 0.001), anterior facial height (P < 0.001), mandibular length (P = 0.049), overjet (P < 0.001 and P = 0.005), and posterior facial symmetry (P = 0.046). MDO as the only surgery or with secondary adjunctive OS improved dentofacial morphology in terms of mandibular advancement, anterior facial height, posterior facial symmetry, and incisal relationships without long-term deterioration in TMJ function or orofacial symptoms.</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141473949","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}
引用次数: 0
Comprehensive evaluation of advanced platelet-rich fibrin in common complications following sagittal split ramus osteotomy: a double-blind, split-mouth, randomized clinical trial. 全面评估高级富血小板纤维蛋白在矢状劈开臼齿截骨术后常见并发症中的作用:一项双盲、分口、随机临床试验。
International journal of oral and maxillofacial surgery Pub Date : 2024-06-04 DOI: 10.1016/j.ijom.2024.03.005
Z Zhu, X Sun, K Chen, M Zhang, G Wu
{"title":"Comprehensive evaluation of advanced platelet-rich fibrin in common complications following sagittal split ramus osteotomy: a double-blind, split-mouth, randomized clinical trial.","authors":"Z Zhu, X Sun, K Chen, M Zhang, G Wu","doi":"10.1016/j.ijom.2024.03.005","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.03.005","url":null,"abstract":"<p><p>The sagittal split ramus osteotomy (SSRO) carries potential risks and complications. A double-blind, split-mouth, randomized clinical trial was performed, involving 30 patients undergoing mandibular setback. Advanced platelet-rich fibrin (A-PRF) was applied to one side, and the other side served as a control. The volume of postoperative drainage over 24 h was recorded. At 1, 2, and 5 days, and 3 months postsurgery, nerve recovery was assessed using the two-point discrimination test (TPD), while pain was evaluated using a visual analogue scale (VAS pain). Facial swelling was evaluated by taking linear measurements from facial reference points at the same time intervals. In the treatment group, the 24-hour drainage volume was lower (P = 0.011), pain was better on day 5 (P = 0.011), and TPD was better on day 2 (P = 0.011), day 5 (P = 0.007), and 3 months postoperatively (P = 0.020) than in the control group. There was also less facial swelling in the treatment group when compared to the baseline of 3 months postoperative (day 1, P = 0.012; day 2, P = 0.001; day 5, P = 0.011). The difference in bone mineral density (HU) at 3 months between the treatment group (469.7 ± 134.2) and the control group (348.3 ± 127.2) was statistically significant (P = 0.011), in favour of the treatment group. A-PRF may reduce postoperative complications such as neurosensory disturbance of the inferior alveolar nerve, pain, swelling, and drainage while enhancing bone healing in the osteotomy gap following SSRO. TRIAL REGISTRATION: The study was registered with the Chinese Clinical Trial Register (ChiCTR2200064534).</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141261280","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}
引用次数: 0
Accuracy of patient-specific implants versus CAD/CAM splints with the mandible-first approach in bimaxillary orthognathic surgery for skeletal Class II malocclusion. 在双颌正颌手术治疗骨骼类 II 型错颌畸形时,采用下颌先入法的患者特异性种植体与 CAD/CAM 夹板的准确性对比。
International journal of oral and maxillofacial surgery Pub Date : 2024-06-03 DOI: 10.1016/j.ijom.2024.05.005
J Yan, B Li, C Zhang, Y Qian, Z Li, X Wang
{"title":"Accuracy of patient-specific implants versus CAD/CAM splints with the mandible-first approach in bimaxillary orthognathic surgery for skeletal Class II malocclusion.","authors":"J Yan, B Li, C Zhang, Y Qian, Z Li, X Wang","doi":"10.1016/j.ijom.2024.05.005","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.05.005","url":null,"abstract":"<p><p>This retrospective study aimed to compare the accuracy of patient-specific implants (PSI) versus mandible-first computer-aided design and manufacturing (CAD/CAM) splints for maxilla repositioning in orthognathic surgery of skeletal Class II malocclusion patients. The main predictor was the surgical method (PSI vs. splints), with the primary outcome being the discrepancy in maxilla centroid position, and secondary outcomes being translation and orientation discrepancies. A total of 82 patients were enrolled (70 female, 12 male; mean age 25.5 years), 41 in each group. The PSI group exhibited a median maxillary position discrepancy of 1.25 mm (interquartile range (IQR) 1.03 mm), significantly lower than the splint group's 1.98 mm (IQR 1.64 mm) (P < 0.001). In the PSI group, the largest median translation discrepancy was 0.74 mm (IQR 1.17 mm) in the anteroposterior direction, while the largest orientation discrepancy was 1.83° (IQR 1.63°) in pitch. In the splint group, the largest median translation discrepancy was 1.14 mm (IQR 1.37 mm) in the anteroposterior direction, while the largest orientation discrepancy was 3.03° (IQR 2.11°) in pitch. In conclusion, among patients with skeletal Class II malocclusion, the application of PSI in orthognathic surgery yielded increased precision in maxillary positioning compared to mandible-first CAD/CAM splints.</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141249147","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}
引用次数: 0
A new patient-specific helical maxillary distractor: a cadaver test. 新型患者专用螺旋上颌骨牵引器:尸体试验。
International journal of oral and maxillofacial surgery Pub Date : 2024-05-31 DOI: 10.1016/j.ijom.2024.05.008
J Gateno, S Bartlett, D Kim, A S Xue, K Gu
{"title":"A new patient-specific helical maxillary distractor: a cadaver test.","authors":"J Gateno, S Bartlett, D Kim, A S Xue, K Gu","doi":"10.1016/j.ijom.2024.05.008","DOIUrl":"https://doi.org/10.1016/j.ijom.2024.05.008","url":null,"abstract":"<p><p>The primary objective of this cadaver study was to assess the feasibility of a novel custom helical distraction system and a patient-specific antral maxillary distractor. The study involved two fresh cadaver heads and followed a systematic procedure. First, virtual planning was conducted for an asymmetric maxillomandibular advancement. Custom patient-specific hardware was then fabricated to enable sequential mandibular advancement and gradual maxillary distraction. The mandibular lengthening procedures were found to be highly accurate, with only minor deviations from the planned results. In terms of maxillary distraction, the patient-specific antral distractors demonstrated favorable outcomes, with two noteworthy exceptions. Ideal forward maxillary advancement was short by a modest 2-3 mm in both cadavers. Additionally, cadaver 2 exhibited an unplanned pitch malrotation. However, an excellent occlusion was achieved in cadaver 1 and an acceptable anterior occlusion in cadaver 2, albeit with bilateral posterior open bites that could be readily corrected with interdental elastics in a clinical setting. This cadaver model study provides compelling evidence for the feasibility of patient-specific antral helical distractors, highlighting their potential to yield positive outcomes. Importantly, the study results suggest that patient-specific antral distractors may offer superior results compared to the current standard of linear distractors.</p>","PeriodicalId":94053,"journal":{"name":"International journal of oral and maxillofacial surgery","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141186972","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}
引用次数: 0
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