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Li J, Xu CT, Li Y, Liang Y, Wu W, Li CY. Biomechanical evaluation of various rigid internal fixation modalities for condylar-base-associated multiple mandibular fractures: A finite element analysis. Med Biol Eng Comput 2024:10.1007/s11517-024-03102-2. [PMID: 38698188 DOI: 10.1007/s11517-024-03102-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 04/17/2024] [Indexed: 05/05/2024]
Abstract
Condylar-base-associated multiple mandibular fractures are more prevalent than single ones. Direct trauma to mandibular symphysis, body or angle are prone to induce indirect condylar fracture. However, little is known about the effects of various rigid internal fixation modalities in condylar base for relevant multiple mandibular fractures, especially when we are confused in the selection of operative approach. Within the finite element analysis, straight-titanium-plate implanting positions in condylar base contained posterolateral zone (I), anterolateral zone (II), and intermediate zone (III). Von Mises stress (SS) in devices and bone and mandibular displacement (DT) were solved, while maximum values (SSmax and DTmax) were documented. For rigid internal fixation in condylar-base-and-symphysis fractures, I + II modality exhibited least SSmax in screws and cortical bone and least DTmax, I + III modality exhibited least SSmax in plates. For rigid internal fixation in condylar-base-and-contralateral-body fractures, I + III modality exhibited least SSmax in screws and cortical bone, I + II modality exhibited least SSmax in plates and least DTmax. For rigid internal fixation in condylar-base-and-contralateral-angle fractures, I + III modality exhibited least DTmax. The findings suggest that either I + II or I + III modality is a valid guaranty for rigid internal fixation of condylar base fractures concomitant with symphysis, contralateral body or angle fractures.
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Affiliation(s)
- Jie Li
- School of Dentistry, Stomatological Hospital, Tianjin Medical University, No. 12, Qixiangtai Road, Heping District, Tianjin, 300070, China
- Department of Stomatology, General Hospital, Tianjin Medical University, No. 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Chong-Tao Xu
- Department of Stomatology, General Hospital, Tianjin Medical University, No. 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Ying Li
- School of Dentistry, Stomatological Hospital, Tianjin Medical University, No. 12, Qixiangtai Road, Heping District, Tianjin, 300070, China
| | - Yuan Liang
- Department of Stomatology, General Hospital, Tianjin Medical University, No. 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Wei Wu
- Department of Stomatology, General Hospital, Tianjin Medical University, No. 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Chang-Yi Li
- School of Dentistry, Stomatological Hospital, Tianjin Medical University, No. 12, Qixiangtai Road, Heping District, Tianjin, 300070, China.
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Al-Moraissi EA, Neff A, Kaur A, Falci SGM, Maria de Souza G, Ellis E. Treatment for Adult Mandibular Condylar Process Fractures: A Network Meta-Analysis of Randomized Clinical Trials. J Oral Maxillofac Surg 2023; 81:1252-1269. [PMID: 37423262 DOI: 10.1016/j.joms.2023.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/05/2023] [Accepted: 06/08/2023] [Indexed: 07/11/2023]
Abstract
PURPOSE Using network meta-analyses (NMA) has become increasingly valuable as it enables the comparison of interventions that have not been directly compared in a clinical trial. To date, there has not been a NMA of randomized clinical trials (RCT) that compares all types of treatments for mandibular condylar process fractures (MCPFs). The aim of this NMA was to compare and rank all the available methods used in the treatment of MCPFs. METHODS Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, a systematic search was conducted in 3 major databases up to January 2023 to retrieve RCTs that compared various closed and open treatment methods for MCPFs. The predictor variable is treatment techniques: arch bars (ABs) + wire maxillomandibular fixation (MMF), rigid MMF with intermaxillary fixation screws, AB + functional therapy with elastic guidance (AB functional treatment), AB rigid MMF/functional treatment, single miniplate, double miniplate, lambda miniplate, rhomboid plate, and trapezoidal miniplate. Postoperative complications were the outcome variables and included occlusion, mobility, and pain, among other things. Risk ratio (RR) and standardized mean difference were calculated. Version 2 of the Cochrane risk-of-bias tool and Grading of Recommendations, Assessment, Development, and Evaluations system were used to determine the certainty of the results. RESULTS The NMA included a total of 10,259 patients from 29 RCTs. At ≤6 months, the NMA revealed that the use of 2-miniplates significantly reduced malocclusion compared to rigid MMF (RR = 2.93; confidence interval [CI]: 1.79 to 4.81; very low quality) and functional treatment (RR = 2.36; CI: 1.07 to 5.23; low quality).Further, at ≥6 months, 2-miniplates resulted in significantly lower malocclusion compared to rigid MMF with functional treatment (RR = 3.67; CI: 1.93 to 6.99; very low quality).Trapezoidal plate and AB functional treatment were ranked as the best options in 3-dimensional (3D) plates and closed groups, respectively.3D-miniplates (very low-quality evidence) were ranked as the most effective treatment for reducing postoperative malocclusion and improving mandibular functions after MCPFs, followed closely by double miniplates (moderate quality evidence). CONCLUSIONS This NMA found no substantial difference in functional outcomes between using 2-miniplates versus 3D-miniplates to treat MCPFs (low evidence).However, 2-miniplates led to better outcomes than closed treatment (moderate evidence).Additionally, 3D-miniplates produced better outcomes for lateral excursions, protrusive movements, and occlusion than closed treatment at ≤6 months (very low evidence).
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Affiliation(s)
- Essam Ahmed Al-Moraissi
- Assistant Professor, Department of Oral and Maxillofacial Surgery, Thamar University, Yemen.
| | - Andreas Neff
- Professor, Chairman and Medical Director, Department of Oral and Craniomaxillofacial Plastic Surgery, Oral Surgery and Implantology, University Hospital Marburg, Marburg, Hesse, Germany
| | - Amanjot Kaur
- Assistant Professor, Department of Oral and Maxillofacial Surgery, All India Institute of Medical Sciences, Vijaypur, Jammu, Jammu and Kashmir, India
| | - Saulo Gabriel Moreira Falci
- Adujunct Professor, Department of Dentistry, Federal University of Vales do Jequitinhonha e Mucuri - UFVJM, Diamantina, Minas Gerais, Brazil
| | - Glaciele Maria de Souza
- Adujunct Professor, Department of Dentistry, Federal University of Vales do Jequitinhonha e Mucuri - UFVJM, Diamantina, Minas Gerais, Brazil
| | - Edward Ellis
- Professor and Chair, Department of Oral and Maxillofacial Surgery University of Texas Health Science Center at San Antonio
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Pavithra SK, Vivek N, Saravanan C, Karthik R, Prashanthi G, Cynthia S. Comparison of Conventional Versus Right Angled Fixation Technique in Management of Mandibular Angle Fractures - A Prospective Randomized Clinical Study. J Oral Maxillofac Surg 2023:S0278-2391(23)00384-1. [PMID: 37160255 DOI: 10.1016/j.joms.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 04/04/2023] [Accepted: 04/10/2023] [Indexed: 05/11/2023]
Abstract
PURPOSE The treatment of mandibular angle fractures ranges from observation to closed reduction with maxillomandibular fixation to open reduction and internal fixation. The study aims to compare the effectiveness of three different techniques (transoral, transbuccal, and right-angled fixation technique) for single adaptational monocortical upper border plating in mandibular angle fracture. METHODS The study conducted at our center was a prospective randomized study. The study duration was from November 2019 to August 2021. The three groups included in our study were transoral, transbuccal, and transoral approach using the right-angled drill. Patients who required open reduction and internal fixation of mandibular angle fracture were included in the study. Computer-generated randomization method was used to allot the participants in any of the three groups, ie, transoral, transbuccal, or right-angled fixation technique. The primary outcome clinical variables were mouth opening (MO), occlusion stability, scar or laceration, facial nerve weakness, infection, and the radiological variables were gap between the fracture segments and displacement of the fracture segment. The secondary outcome of our study is a comparison of the perioperative complications including plate exposure during the entire fracture healing period. The covariates of the study were age, sex, etiology, and tooth in line of fracture. Statistical analysis was done using ANOVA, post hoc Tukey test, and Pearson χ2 test. A P value less than 0.05 was considered statistically significant. RESULTS A total of 48 patients were included in our study. According to randomization, each group was allotted 16 patients. In the study, 66.7% of the study population were male and 33.3% were female; 75% of the study population were victims of road traffic accidents, and 25% were injured due to assault. The mean and standard deviation for MO at 1 month were 31.3 ± 2.9 for the transoral group, 35.8 ± 1.7 for the transbuccal group, and 35.5 ± 1.3 for the right-angled fixation group. On intergroup comparison, statistically significant results were seen at the 1-month postoperative MO clinical parameter. The P value here was 0.02 which was statistically significant. CONCLUSION The comparison of the right-angled fixation technique to transoral and transbuccal fixation methods have not been documented. Our study is the first of its kind to compare the right-angled fixation technique to various other approaches. Our study showed that the MO was better postoperatively with the transbuccal approach. The other variables showed no difference among the three techniques.
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Affiliation(s)
- Sarda K Pavithra
- Resident, Department of Oral and Maxillofacial Surgery, SRM Kattankulathur Dental College
| | - Narayanan Vivek
- Professor, Department of oral and maxillofacial surgery, SRM Kattankulathur Dental College
| | - Chandran Saravanan
- Professor, Department of oral and maxillofacial surgery, SRM Kattankulathur Dental College
| | - Ramakrishnan Karthik
- Professor, Department of oral and maxillofacial surgery, SRM Kattankulathur Dental College
| | - Gurram Prashanthi
- Associate Professor, Department of oral and maxillofacial surgery, SRM Kattankulathur Dental College
| | - Scott Cynthia
- Assistant Professor, Department of oral and maxillofacial surgery, SRM Kattankulathur Dental College.
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Li J, Jiao J, Luo T, Wu W. Biomechanical evaluation of various internal fixation patterns for unilateral mandibular condylar base fractures: A three-dimensional finite element analysis. J Mech Behav Biomed Mater 2022; 133:105354. [DOI: 10.1016/j.jmbbm.2022.105354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/24/2022] [Accepted: 06/29/2022] [Indexed: 10/17/2022]
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Reliability of a Trapezium Miniplate with Endoscope-Assisted Internal Fixation in Mandibular Subcondylar Fractures: A Three-Dimensional Analysis. J Clin Med 2021; 11:jcm11010207. [PMID: 35011948 PMCID: PMC8745675 DOI: 10.3390/jcm11010207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/15/2021] [Accepted: 12/25/2021] [Indexed: 01/11/2023] Open
Abstract
This study aimed to evaluate the reliability of a trapezium plate for open reduction and internal fixation (ORIF) of mandibular subcondylar fractures with the simultaneous use of an endoscope. We selected and retrospectively studied 18 patients (12 males and 6 females) with unilateral mandibular subcondylar fractures who visited the Wonju Severance Christian Hospital. The mean age of the patients was 43.43 ± 15.76 years. Patients underwent ORIF with trapezium miniplate application through an intraoral incision under general anesthesia. The clinical and radiographic findings of the fractured side were compared with those of the non-operated side at 6 months follow-up. All occlusions became stable, and transient functional disturbances disappeared within 6 months of periodic follow-up. Functional mandibular movement recovered within the normal range, with an average mouth opening of 41.5 mm, protrusion of 7.5 mm, and lateral excursion of 7 mm at 6 months. Radiographic controls and statistical analysis confirmed a decent anatomical reduction in all 18 cases. In conclusion, the use of a trapezium miniplate with endoscope-assisted ORIF in mandibular subcondylar fractures can be useful for fixation and functional recovery.
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Sikora M, Chęciński M, Nowak Z, Chęcińska K, Olszowski T, Chlubek D. The Use of Titanium 3D Mini-Plates in the Surgical Treatment of Fractures of the Mandibular Condyle: A Systematic Review and Meta-Analysis of Clinical Trials. J Clin Med 2021; 10:jcm10163604. [PMID: 34441900 PMCID: PMC8396911 DOI: 10.3390/jcm10163604] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/25/2021] [Accepted: 08/14/2021] [Indexed: 01/08/2023] Open
Abstract
Introduction: Fixing fractures of the base and neck of mandibular condyles is demanding due to the difficulties in surgical access and the various shapes of bone fragments. Classic fixation techniques assume the use of straight mini-plates, utilized for other craniofacial bone fractures. Three dimensional mini-plates may provide a reasonable alternative due to their ease of use and steadily improved mechanical properties. The multitude of different shapes of 3D mini-plates proves the need for their evaluation. Aim: This paper aims to summarize the clinical trials regarding the use of various types of 3D condylar mini-plates in terms of need for reoperation and the incidence of loosening and damage to the osteosynthetic material. Materials and Methods: A systematic review was conducted in accordance with PICOS criteria and PRISMA protocol. The risk of bias was assessed using ROBINS-I and RoB 2 Cochrane protocols. The obtained data series was analyzed for correlations (Pearson’s r) respecting statistical significance (Student’s t-test p > 0.05) and visualized using OriginLab. Results: 13 clinical trials with low overall risk of bias regarding 6 shapes of 3D mini-plates were included in the synthesis. The number of reoperations correlates with the number of fixations (r = 0.53; p = 0.015) and the total number of screw holes in the mini-plate (r = −0.45; p = 0.006). There is a strong correlation between the number of loosened osteosynthetic screws and the total number of fractures treated with 3D mini-plates (r = 0.79; p = 0.001 for each study and r = 0.99; p = 0.015 for each mini-plate shape). A correlation between the percentage of lost screws and the number of distal screw holes is weak regarding individual studies (r = −0.27; p = 0.000) and strong regarding individual mini-plate shape (r = −0.82; p = 0.001). Three cases of 3D mini-plate fractures are noted, which account for 0.7% of all analyzed fixation cases. Discussion: The reasons for reoperations indicated by the authors of the analyzed articles were: mispositioning of the bone fragments, lack of bone fragment union, secondary dislocation, and hematoma. The known screw loosening factors were poor bone quality, bilateral condylar fractures, difficulties in the correct positioning of the osteosynthetic material due to the limitations of the surgical approach, fracture line pattern, including the presence of intermediate fragments, and mechanical overload. Fractures of the straight mini-plates fixing the mandibular condyles amounts for up to 16% of cases in the reference articles. Conclusions: There is no convincing data that the number of reoperations depends on the type of 3D mini-plate used. The frequency of osteosynthetic screw loosening does not seem to depend on the 3D mini-plate’s shape. Clinical fractures of 3D mini-plates are extremely rare.
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Affiliation(s)
- Maciej Sikora
- Department of Maxillofacial Surgery, Hospital of the Ministry of Interior, Wojska Polskiego 51, 25-375 Kielce, Poland;
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland
| | - Maciej Chęciński
- Preventive Medicine Center, Komorowskiego 12, 30-106 Kraków, Poland;
- StomaDent Non-Public Healthcare Institution, Dental Clinic, Kościuszki 32, 46-320 Praszka, Poland;
| | - Zuzanna Nowak
- StomaDent Non-Public Healthcare Institution, Dental Clinic, Kościuszki 32, 46-320 Praszka, Poland;
| | - Kamila Chęcińska
- Department of Glass Technology and Amorphous Coatings, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, ul. Mickiewicza 30, 30-059 Kraków, Poland;
| | - Tomasz Olszowski
- Department of Hygiene and Epidemiology, Pomeranian Medical University, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland;
| | - Dariusz Chlubek
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland
- Correspondence:
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