Mandibular Contour Research Articles

Safety and efficacy of female chin enhancement and facial contouring with a 3-point injection technique, an imaging follow up with ultrasound and magnetic resonance

This research aimed to assess the effectiveness of a 3-point injection technique using hyaluronic acid (25mg/ml HA reticulated Revanesse Shape G’ 203) to enhance the chin and mandibular border with hyaluronic acid 25mg/ml HA reticulated Revanesse Contour G’ 150. The technique involved injecting the filler into specific planes (supraperiostium for chin enhancement and subcutaneous for mandibular contouring) to achieve improved facial aesthetics. By combining needle and cannula, precise targeting was possible without severe complications. Thirty female participants with retrognathia and undefined mandibular border underwent the procedure and were evaluated at 21 days, and 9 months post-injection. Ultrasound technology facilitated accurate injections by visualizing facial structures and blood vessels. Additionally, one participant underwent magnetic resonance imaging with 3D reconstruction to confirm the precise placement of hyaluronic acid in the intended injection plane.

Quantification of Cephalometric Changes in Gonial Angle Morphology Following Facial Feminization Surgery.

Facial feminization surgery (FFS) is a type of gender-affirming surgery aimed at bringing masculine facial features more in line with typically feminine characteristics. Specifically, mandibular contouring can create a softer jawline and help create a more round, feminine face. As the popularity of FFS continues to increase, improving surgical techniques and patient satisfaction is imperative. However, no quantitative measurement system currently exists to measure these changes. In this study, the authors describe the use of a novel segmentation technique using computerized tomography imaging to quantify the bony changes that occur during gonial angle reduction. Further, authors utilize this technique to describe changes in a cohort of 13 patients, and how these changes correlate with patient satisfaction. The authors found that gonial angle volume and surface area significantly decreased, as well as the intergonial:interzygomatic ratio, with a smaller ratio associated with more feminine features. In addition, patient satisfaction significantly increased post-operatively both specifically regarding jawline appearance (P = 0.0014) and regarding overall social and psychological function (P = 0.0021 and P = 0.0032, respectively), as captured by the FACE-Q and World Health Organization Quality of Life (WHOQOL) surveys. Patients with greater changes in surface area reported greater improvements in WHOQOL psychological scores (P = 0.0086), and patients with greater changes in the intergonial:interzygomatic ratio reported greater improvements in WHOQOL social scores (P = 0.0299). Overall, our novel technique captures significant changes in gonial angle shape and can be applied to a wide range of future studies to improve the quality and accessibility of FFS.

Mandibular Contouring in Subjects With Class II or Class III Dentofacial Deformities and Treatment Needs

Facial contouring relates to hard and soft structures that make up the face. Skeletal class II and III subjects present bone structure and position changes, significantly impacting the soft tissues. This study aims to analyze the morphology of the mandible at mandibular ramus and angle level in subjects with skeletal facial deformity class II and III who are candidates for orthognathic surgery and to define implications in facial contour. A cross-sectional study used cone beam computed tomography to compare the mandibular contour (mandibular angle and ramus region) in orthognathic surgery candidates. One hundred sixty orthognathic surgery candidates were analyzed, ranging in age from 18 to 58 years (31.29 ± 11.97). Regarding the skeletal class, 95 (59.37%) were skeletal class II, and 65 (40.62%) were skeletal class III. Class II subjects had a larger antegonial notch than class III subjects. Concerning the mandibular contour, class II subjects presented less vertical distance than class III subjects, but both presented similar gonial angles. Concerning the ideas to assess the need for mandibular contouring surgery, the 2 proposals to determine the need for mandibular contouring surgery in class II and III subjects present a similar distribution. The mandibular notch is an objective element and is commonly present in subjects with a class II facial pattern; this element can be used in contour analysis to define expected facial characteristics, including the patient’s facial sex, in the decision of surgical techniques for lower facial contour augmentation or reduction.

Segmental Mandibulectomy and Mandibular Reconstruction with Fibula-Free Flap Using a 3D Template.

The present study evaluates the influence of virtual surgical planning with a preoperative 3D resin model on aesthetic and functional outcomes in patients treated by segmental mandibulectomy and reconstruction with fibula-free flap for oral cancer. All consecutive patients who underwent segmental mandibulectomy and mandibular reconstruction with a fibula-free flap using a 3D template at our department from January 2021 to January 2023 were included in the study. "Patients control" were patients treated by reconstruction with a fibula-free flap without using a 3D template. Three-dimensional modeling was performed by converting from preoperative computed tomography to a stereolithography format to obtain the resin 3D models. Qualitative analysis of anatomical and aesthetic results consisted of the evaluation of the patients' aesthetic and functional satisfaction and the symmetry of the mandibular contour observed at clinical examination. Quantitative analysis was based on the assessment of the accuracy and precision of the reconstruction by comparing preoperative and postoperative computed tomograms as objective indicators. Seven patients (five males and two females, mean age of 65.1 years) were included in the study. All patients showed a symmetric mandibular contour based on the clinical examination. After recovery, six patients (85.7%) considered themselves aesthetically satisfied. The quantitative analysis (assessed in six/seven patients) showed that the mean difference between preoperative and postoperative intercondylar distance, intergonial angle distance, anteroposterior dimension, and gonial angle improved in the 3D template-assisted group. The 3D-printed template for mandibular reconstruction with microvascular fibula-free flap can improve aesthetic outcomes in comparison with standard approaches.

Mandibular Notch Contouring in Temporomandibular Joint Replacement. Technical Note.

Temporomandibular Joint Replacement (TMJ-R) is used to treat maxillomandibular disease related to condylar head augmentation, condylar head reduction, absence of the condylar head and TMJ reconstruction. In most of the cases, TMJ-R could be used together with orthognathic surgery. In cases with facial asymmetry related to overgrowth of the mandibular condyle as in the cases of osteochondroma, there is a progressive facial asymmetry with enlargement of the unilateral mandibular ramus and mandibular body, creating strong mandibular contouring when comparing to the contralateral side. Usually, in this case, a lack is observed in the antegonial notch. ​The aim of this technical note ​is to provide the strategy to obtain facial symmetry using the TMJ prosthesis and contouring osteotomy in the same procedure.

Anthropometric Analysis of Indian Faces: A Systematic Review.

Facial anthropometric data vary significantly within the Indian population due to the racial, ethnic and geographic diversity. The anthropometric data of a given ethnic community may not match the other due to diverse ethnic variations, and hence, this study is intended to review the facial anthropometric data pertaining to the diverse Indian populace through a systematic literature survey. An electronic search done on Medline, Embase and Central databases was utilized to conduct a systematic review of literature. The available data were analyzed based on the various esthetic subunits of the face. The following inclusion criteria were considered: (1) studies depicting the anthropometric data of any ethnic group identified as belonging to India, (2) studies originating from Indian subcontinent, (3) studies which included data of male and female subjects separately and (4) articles in English language only. The following exclusion criteria were considered: (1) atudies conducted on participants with severe malocclusion, developmental craniofacial anomalies, post-traumatic facial deformities or with a history of previous craniofacial or cosmetic surgery, (2) studies which did not specify the anthropometric landmarks used to obtain the measurements, (3) studies in which the statistical analysis was not provided, or if data were grouped across genders and (4) editorials, commentaries, case reports, systematic reviews, meta-analyses and articles not available in English language. Twenty-one articles met the inclusion criteria. Majority of the Indians, particularly men, seem to have a mesoproscopic facial phenotype. The vertical and horizontal facial dimensions of the Indian male are comparably larger than the Indian female. There is sexual dimorphism among the Indian population with regard to the upper and lower thirds of the face, with little or no gender difference as regards the middle third of the face. It was observed that the nasal dimensions of the Indian race were not compatible with that of the occidental, oriental or the western race. The overall facial structure and the upper half of the face were critical in determining facial attractiveness in Indian males while the lower half of the face and the mandibular contour were critical in determining facial attractiveness in females. It is observed that there is a paucity of facial anthropometric data for the Indian population considering the ethnic, racial and geographic diversity. Since the prevalence of craniofacial anomalies and dentofacial deformities in India is high and thus the scope for corrective surgery, it is important to compile baseline facial anthropometric data based on the ethnic diversity of the Indian population.

Deep Neck Contouring through the Ages.

Deep neck contouring can achieve dramatic results in young and old patients. Both genetic predisposition and aging contribute to the malposition of deep neck structures and a poorly contoured neckline. Depending on the patient's anatomy, deep neck contouring should involve a combination of submental liposuction, platysmaplasty, subplatysmal fat lipectomy, resection of the anterior belly of the digastric muscle, and either cautery or resection of the submandibular glands. Resorption of the facial bony skeleton that occurs with aging affects the ultimate postoperative mandibular contour, and postoperative results thus differ in the young versus old patient. In patients in which there is concern for excess skin laxity, a concurrent facelift is necessary to excise excess neck skin. This article includes a discussion on how a combination of aging and genetics influence a patient's neck anatomy, critical preoperative considerations prior to performing deep neck contouring, intraoperative technique, and adjunct procedures that can further improve a patient's neckline.

MANDIBULAR FILLING

Context: Mandibular contouring is important for facial appearance and maintaining youth, as well as being key to defining masculine versus feminine facial features. Dermal fillers, for the most part, are non-invasive and temporary procedures, and may be a choice for correcting mild to moderate lack of definition in the mandibular contour of individuals who seek a less invasive treatment when compared to surgery or who have not yet decided to make permanent changes. in your facial appearance. Objective: To evaluate the effectiveness of the highly crosslinked hyaluronic acid-based filler, Restylane@LyftTM, for treating the mandibular line using the MD Codes technique. Methods: A brief literature review on jaw augmentation using injectable fillers, as well as a case report. Results: Observed through a quantitative evaluation method, obtained through stereophotogrammetry with the Vectra software, quantified through a metric scale of motion vectors and a metric scale of relief observed during treatment. Conclusions: There is high efficacy in the use of highly crosslinked hyaluronic acid filler, Restylane@LyftTM, using the MD Codes technique for volumization and redefinition of the mandibular contour.

Biomechanical feasibility of non-locking system in patient-specific mandibular reconstruction using fibular free flaps

Mandibular reconstruction with free fibular flaps is frequently used to restore segmental defects. The osteosythesis, including locking and non-locking plate/screw systems, is essential to the mandibular reconstruction. Compared with the non-locking system that requires good adaption between plate and bone, the locking system appears to present a better performance by locking the plate to fixation screws. However, it also brings about limitations on screw options, a higher risk of screw failure, and difficulties in screw placement. Furthermore, its superiority is undermined by the advancing of patient-specific implant design and additive manufacturing. A customized plate can be designed and fabricated to accurately match the mandibular contour for patient-specific mandibular reconstruction. Consequently, the non-locking system seems more practicable with such personalized plates, and its biomechanical feasibility ought to be estimated. Finite element analyses of mandibular reconstruction assemblies were conducted for four most common segmental mandibular reconstructions regarding locking and non-locking systems under incisal biting and right molars clenching, during which the influencing factor of muscles’ capacity was introduced to simulate the practical loadings after mandibular resection and reconstruction surgeries. Much higher, somewhat lower, and similar maximum von Mises stresses are separately manifested by the patient-specific mandibular reconstruction plate (PSMRP), fixation screws, and reconstructed mandible with the non-locking system than those with the locking system. Equivalent maximum displacements are identified between PSMRPs, fixation screws, and reconstructed mandibles with the non-locking and locking system in all four reconstruction types during two masticatory tasks. Parallel maximum and minimum principal strain distributions are shared by the reconstructed mandibles with the non-locking and locking system in four mandibular reconstructions during both occlusions. Conclusively, it is feasible to use the non-locking system in case of patient-specific mandibular reconstruction with fibular free flaps based on the adequate safety, comparable stability, and analogous mechanobiology it presents compared with the locking system in a more manufacturable and economical way.

A Novel Chin-Reductive Drawer Genioplasty Using Subapical and Mandibular Contouring Ostectomy.

As the most prominent feature of the lower face, the chin is crucial to human facial morphology, and plays a large role in contributing to facial attractiveness and harmony. Although an increasing number of genioplasty procedures are being introduced for chin augmentation, chin reduction procedures are rarely performed. Because of the inevitable cervicomental angle widening and relaxation of the floor-of-mouth muscles caused by chin shortening and the elevation of the lower edge of the mandible, chin reduction remains a challenging procedure. The authors' novel drawer-genioplasty approach involves a flexible chin-reducing procedure using subapical and mandibular contouring ostectomy. This technique can effectively shorten various types of long chin for improved facial proportions and maximize floor-of-mouth muscle protection during surgery, thereby avoiding postoperative submental sagging. Several measures, including the ratio between the lower (subnasale to menton distance) and middle facial heights (glabella to subnasale distance) (R1), the ratio between the anterior midline bone heights of the mandible (stomion to menton distance) and maxilla (subnasale to stomion distance) (R2), and the cervicomental angle, were used to evaluate the outcome of the procedure. Comparing the preoperative and postoperative measures revealed that there was a significant decrease in both R1 (1.25 ± 0.15 versus 1.09 ± 0.12) and R2 (1.94 ± 0.24 versus 1.58 ± 0.11). Although cervicomental angle increased from 107.3 ± 8.2 degrees preoperatively to 112.4 ± 7.0 degrees postoperatively, this value was still within the normal range. In addition to providing effective and significant aesthetic improvements, drawer genioplasty is safe and involves no complications. Therapeutic, IV.

The importance of remodeling physiological mandibular angle: mandibular "V-line" versus long curved ostectomy.

Numerous surgical options for correcting prominent mandibular angles in East Asians have been reported. The objective of this study is to investigate the importance of remodeling physiological mandibular angle by comparing the surgical effects and complications of mandibular "V-line" ostectomy and long curved ostectomy. A retrospective study was conducted on patients who underwent either mandibular "V-line" ostectomy (Group I) or long curved ostectomy (Group II). The outcomes were evaluated using computed tomography (CT) images in combination with medical records and photographs. Data were collected preoperatively and at 6- to 12-month intervals postoperatively. Mandibular angle, posterior mandibular ramus height, radian of the ostectomy line, mandibular symmetry as well as patients' complications were investigated. FACE-Q reports of facial appearance and psychosocial parameters were also compared between the two groups. All 106 patients showed improved lower facial contours. Although the postoperative mandibular angle (116.67±7.14°vs 118.31±6.80°, P=.233) and mandibular symmetry (2.36±1.21mm vs 2.56±1.19mm, P=.395) were similar in the two groups, larger postoperative posterior mandibular height and lower radian of the ostectomy line were observed in Group I (P < .001). Physiological mandibular angle was also remodeled in Group I. The gonial deficiency, more soft tissue sagging and significant lower FACE-Q scores of facial appearance were observed in Group II (P < .001). In conclusion, "V-line" ostectomy is better suited for achieving a more physiological mandibular angle with less complications compared to mandibular long curved ostectomy. When it comes to mandibular contouring, "V-line" ostectomy may be the preferred option.

RESECTION OF AMELOBASTOMA AND IMMEDIATE RECONSTRUCTION WITH MICROVASCULARIZED FIBULAR GRAFT: A CASE REPORT

A 35-year-old female presented an intraoral swelling in the right posterior region of the mandible, which was asymptomatic, with two years of evolution. She presented an anatomopathological report with a previous diagnosis of ameloblastoma, but she was unable complete the proposed treatment due to the COVID-19 pandemic. Clinical examination revealed a granulomatous lesion in the right retromolar region, extending to the vestibular mucosa of elements 46 and 47, together with,bone expansion. A facial tomography showed an expansive, cystic, multilocular lesion, with erosion of the adjacent cortical bone in the right body, angle, and mandibular ramus, measuring approximately 4.6 × 2.2 × 3.7 cm. The patient underwent partial resection of the right posterior mandible with immediate reconstruction of a microvascularized fibular graft and fixation with a reconstruction plate. In the postoperative period, the patient evolved with satisfactory mandibular contour, good mouth opening, and preserved masticatory function. A 35-year-old female presented an intraoral swelling in the right posterior region of the mandible, which was asymptomatic, with two years of evolution. She presented an anatomopathological report with a previous diagnosis of ameloblastoma, but she was unable complete the proposed treatment due to the COVID-19 pandemic. Clinical examination revealed a granulomatous lesion in the right retromolar region, extending to the vestibular mucosa of elements 46 and 47, together with,bone expansion. A facial tomography showed an expansive, cystic, multilocular lesion, with erosion of the adjacent cortical bone in the right body, angle, and mandibular ramus, measuring approximately 4.6 × 2.2 × 3.7 cm. The patient underwent partial resection of the right posterior mandible with immediate reconstruction of a microvascularized fibular graft and fixation with a reconstruction plate. In the postoperative period, the patient evolved with satisfactory mandibular contour, good mouth opening, and preserved masticatory function.

6. Assessment of Robot-assisted Mandibular Contouring Surgery in Comparison with Traditional Surgery: A Prospective, Single-center, Randomized Controlled Trial

PURPOSE: Few clinical studies on robot-assisted surgery (RAS) for mandibular contouring have been reported. The aim of this study was to follow the long-term effectiveness and safety of RAS for craniofacial bone surgery. METHODS: This small-sample, early-phase, prospective, randomized controlled study included patients diagnosed with mandibular deformity requiring mandibular contouring surgery. Patients of both genders aged 18 to 30 years without complicated craniofacial repair defects were enrolled and randomly assigned in a 1:1 ratio by a permuted-block randomized assignments list generated by the study statistician. The primary outcomes were the positioning accuracy and accuracy of the osteotomy plane angle 1 week after surgery. Surgical auxiliary measurement index, patient satisfaction scale, surgical pain scale, perioperative period, and complications at 1 week, 1 month, and 6 months after surgery were also analyzed. RESULTS: One patient was lost to follow-up, resulting in a total of 14 patients in the traditional surgery group and 15 in the robot-assisted group (mean [standard deviation] age, 22.65 [3.60] years). Among the primary outcomes, there was a significant difference in the positioning accuracy (2.91 mm vs 1.65 mm; P < 0.01) and angle accuracy (13.26º vs 4.85º; P < 0.01) between the 2 groups. Secondary outcomes did not significantly differ. CONCLUSION: Compared to traditional surgery, robot-assisted mandibular contouring surgery showed improved precision in bone shaving, as well as higher safety.

Is Scaffolding Iliac Bone Graft Within Titanium Mesh Successful in Reconstructing Unilateral Large Sized Mandibular Contour Defects

The reconstruction of unilateral large-sized mandibular contour defects with no loss of continuity and good occlusion has been a challenge. The purpose of the current study was to evaluate the effect of using patient-specific titanium mesh scaffolding avascular pure iliac bone graft in reconstructing these defects.

Mandible Angle Resection with the Retroauricular Approach

Square-shaped and large moon-shaped faces are commonly observed in Asians, and the contour of the mandible is associated with the shape of the lower part of the face. Mandible contouring surgery is performed to create a softer impression for East Asians. Currently, most surgeries are performed using an intraoral approach. External approaches have not been cosmetically attempted because of possible damage to the facial nerve and visible scarring and have been limited to mandible bone fracture reduction. This study included 42 patients who underwent mandibular angle reduction via classical intraoral incision and retroauricular incision between April 2019 and October 2021. Clinical outcomes were assessed using the Global Aesthetic Improvement Scale and Visual Analog Scale. Surgery was successful in all cases, with no significant complications. An appropriate mandibular contour was achieved postoperatively. All patients were satisfied with the outcome. Some patients experienced short-term complications, such as hematoma and wound disruption of the skin above the incision line. However, these improved within 3 weeks, and no serious long-term complications were observed. Mandible angle resection with the retroauricular approach is a promising alternative for patients, allowing speedy recovery and the resumption of routine daily life.

Rehabilitation of long-term mandibular defects by whole-process digital fibula flap combining with implants: A case report.

Currently, the gold standard and workhorse in mandibular reconstruction is the free vascularized fibula flap. Particularly for patients who have had mandibulectomy for a long time, it is still difficult to precisely reconstruct the mandibular contour and successfully restore the patient's chewing function and esthetics. For the restoration and rehabilitation of long-term mandibular abnormalities, three-dimensional (3D) virtual surgical planning (VSP) and 3D-printed surgical guides are essential. Digital design and manufacturing were used to improve the accuracy of prostheses and facilitate occlusal reconstruction. Therefore, equipped with the methods of 3D VSP, 3D-printed surgical guides, free vascularized fibular flap, and immediate dental implants, this clinical report provides a feasible solution for mandibular reconstruction.

FILLING IN MANDIBULAR CONTOUR WITH HYALURONIC ACID

The shape of the jawline has a profound effect on an individual’s appearance and is an area of attention for many people looking for aesthetic procedures. Hyaluronic acid is one of the best fillers used today. Fillers at the angle of the jaw widen or augmentation the angle and make a sharp contour of the posterior part of the jawline. In the chin, fillers improve projection and the appearance of the fat deposit submental. Contouring is a procedure with satisfactory results desired for men to make the contour more designed in the mandibular area. The aim of this study is to present a clinical case the filler’s hyaluronic acid in the jawline and chin of the male face, in order to improve the characteristics inherent to the male facial contour. The methods used high G prime hyaluronic acid fillers to provide mandibular volumization, projection and augmentation of the chin. Two sessions were performed, totaling 8 fillers injection. The pictures the before and after is possible to observe the lower third of the face more augmented, at 45º the mandibular contour including ascending ramus, angle and body more marked and at 90º the projection of the chin. By comparing the photographs of before and after the treatment, there was a change in the facial pattern and the balance of maxillomandibular relationships was achieved together with aesthetic satisfaction.

A Rejuvenating treatment targeting "tech neck" lines and wrinkles in Chinese women: A prospective, open-label, single-center study.

Aging of neck and jawline skin is caused by intrinsic and extrinsic factors and is evidenced by wrinkling, laxity, skin dyspigmentation, loss of the mandibular contour, accumulation of submental fat, density loss, and prominent platysma bands. Early intervention with topical cosmeceuticals, especially in younger subjects with "tech neck," can offer a solution and potentially mitigate aging of the neck and jawline. The objective of this prospective, open-label, single-center clinical study was to assess the efficacy and tolerability of a topical anti-aging neck treatment (TNT) in a cohort of Chinese women with mild to moderate signs of aging on the neck and jawline. This study was approved by an ethics committee and involved healthy Chinese subjects. Thirty-five female subjects, 25-50 years old, with mild to moderate signs of aging of the neck and jawline were recruited. Subjects applied the TNT to the neck and jawline twice daily for 84 days. Long-term efficacy and tolerability, clinical photography, bioinstrumentation, and a self-assessment questionnaire were performed at baseline and post-baseline. The TNT significantly improved horizontal neck fold lines and neck skin elasticity, hydration, gloss/radiance, and skin tone evenness post-baseline. Clinical photography and ultrasound corroborated these findings. The product was well perceived and well tolerated by subjects. This study demonstrated the TNT was effective against both extrinsic and intrinsic aging of the neck and jawline. The TNT provides a topical solution for Chinese women concerned with an aging appearance of the neck including "tech neck."

Custom Endoprosthesis: A Versatile Surgical Technique for Optimizing Pediatric Mandibular Reconstruction and Dental Restoration

Goals of pediatric mandibular reconstruction are restoring form, function, and esthetics while providing platforms for dental restoration. Though many techniques recreate the inferior mandibular border, most fail to address form and function in a manner that optimizes dental rehabilitation. We describe a surgical technique using a novel custom endoprosthesis that recapitulates the native mandibular contour while supporting the bone construct in a cephalad direction with a medial ledge facilitating implant placement and oral rehabilitation. This multi-institutional retrospective review at high-volume pediatric craniofacial surgery departments features patients with large mandibular resections warranting custom constructs. Thirteen patients underwent mandibular resection and endoprosthesis reconstruction with either free fibula osteocutaneous flaps (n = 9), soft tissue free flaps without bone graft (n = 2), rib graft (n = 1), or iliac crest bone graft (n = 1). Five patients required revisions for distal flap necrosis, intraoral granuloma, and orocutaneous fistulas; one endoprosthesis required removal. Excellent esthetic and reconstructive outcomes were achieved; however, only 2 patients completed dental restoration given financial constraints. A custom endoprosthesis represents an untapped avenue toward comprehensive pediatric mandibular reconstruction. It shows compatibility with microvascular flaps while optimizing facial contour and bone height for implant placement. Given these advantages, substantial financial barriers to dental restoration should be addressed.

Dual Application of Patient-Specific Occlusion-Based Positioning Guide and Fibular Cutting Guide for Accurate Reconstruction of Segmental Mandibular Defect.

In this study, the authors introduced a dual application of patient-specific occlusion-based positioning guide and fibular cutting guide to obtain ideal occlusal relationship and mandibular contour in patients undergoing mandibular reconstruction. A retrospective review was performed in 21 patients who underwent mandibular reconstruction with a fibular osteocutaneous free flap. Using computed tomography and intraoral scanning data, fibular cutting guide and occlusion-based positioning guide were simulated in a modeling software and 3-dimensionally printed. Both guides were applied in 9 patients, defined as dual guide group, while the fibular cutting guide was solely used in the remaining patients, defined as single guide group. Functional outcomes including occlusion status, trismus, presence of osseointegrated implant were assessed at 1-year postoperative period. To evaluate the accuracy of the reconstruction, the discrepancy between the planned simulation and actual surgical result was quantified by measuring mandibular deviation angle and volume conformity. Regarding the functional outcomes, all patients in dual guide group showed satisfactory occlusion and intact oral capacity at postoperative 1-year assessment, while 3 patients in single guide group had prolonged malocclusion. The dual guide group showed significantly decreased deviation angle in coronal (right side, 2.93°±1.98° vs. 7.02°±2.81°, P =0.003) and axial plane (right side, 3.20°±2.04° vs. 7.63°±3.40°, P =0.006). The mean volume conformity between the simulation and actual fibular object was significantly higher in the dual guide group (75.27%±6.12% vs. 59.06%±8.57%, P =0.001). In conclusion, the use of occlusion-based positioning guide combined with the fibular cutting guide can enhance the accuracy of mandible reconstruction and functional outcomes.