Fibula Jaw-during-Admission.

BACKGROUND: Fibula Jaw-in-a-Day (JIAD) is considered the most advanced approach for segmental mandibular defect reconstruction and dental rehabilitation. However, it has limitations and challenges for further pursuit. We propose Fibula Jaw-during-Admission (JDA) as a solution. MATERIALS AND METHODS: From 2019 to 2021, six patients received fibula "Jaw-during-Admission." Segmental mandibulectomy, fibula transfer, and immediate dental implantation were performed simultaneously during a single surgery. Intraoral scans were used to fabricate temporary light occlusion contact dental prostheses while on the ward prior to discharge during the first and second week post operation. The prostheses were installed before discharge and changed to permanent ones with normal occlusal contact in the clinic at about six months after X-ray confirmation of bone healing. RESULTS: All six surgeries succeeded. Four patients received palatal muco-periosteal graft after debridement of peri-implant overgrown granulation tissue. Follow-up ranged from 12 to 34 months (average 21.2 months) and revealed good function and appearance in all patients. CONCLUSION: Fibula JDA is superior to the Fibula JIAD approach for simultaneous mandibular reconstruction with fibula and dental rehabilitation. There is no need for postoperative intermaxillary fixation. The surgery can be performed more reliably with less stress. It provides an additional opportunity for dental rehabilitation if initial dental prosthesis installation during JIAD fails. Postreconstruction intraoral scans provide greater precision and more flexibility in milling dental prosthesis which are mapped to the reconstructed mandible during the postoperative period.

Dental Implant Outcomes in Fibula Mandible Reconstruction with or without Vertical Distraction for Symphysis Cross-Arch Segmental Defects.

SUMMARY: Dental implant complications in patients with a symphysis cross-arch defect occur following fibula mandible reconstruction due to mechanical stress. The authors compared implant outcomes after single-barrel fibula mandible reconstruction with immediate implant placement or after completion of vertical distraction osteogenesis.

Reconstruction of mandibular defects involving the central segment with fibula osteoseptocutaneous free flap following ameloblastoma resection: Patient-reported outcomes.

OBJECTIVES: Mandibular defects involving the central segment are challenging. This study analyzes the impact of defect extent and reconstruction method on quality of life (QOL) and obstructive sleep apnea (OSA). MATERIALS AND METHODS: Twenty-nine ameloblastoma patients received segmental mandibulectomy involving the C-segment and immediate fibula free flap reconstruction were recruited. Defects: (C: 2, LC: 11, LCL: 19). Mean defect length: 8.79 cm (± 2.34). Inset: Low-single-barrel (n: 19), with secondary distraction osteogenesis (n: 8/19), high-single-barrel (n: 7), double barrel (n: 3). Patients were surveyed using University of Washington Quality of Life (UW-QOL) and Berlin risk of postoperative sleep apnea questionnaires. RESULTS: Flap failure: None. Mean follow-up: 109.6 ±â€¯92.8 months. UW-QOL: Physical function 91.83 (± 14.92); social function 90.17 (± 17.19). No statistical difference between C, LC, and LCL was found, but C group which received low-single-barrel had the lowest score in appearance and chewing domains. In health-related QOL (HR-QOL) compared with 1 month before cancer, 69% reported best results. "Appearance" was the most important issue for the past 7 days, followed by "Chewing," prevailing in LC and C groups that predominately reconstructed by low-single-barrel. Berlin score: 7 patients (4 LCL, 3 LC≥8 cm) were at high risk for postoperative OSA. CONCLUSION: "Like-with-like" reconstruction with immediate endosteal dental implants yields the best results. Inset of fibula bone could affect outcomes, favoring double-barrel or single-high-barrel inset. Appearance and chewing remain the main concerns, largely, in those with low-single-barrel inset and no dental restoration. After long/extensive LCL and LC mandibulectomies, postoperative OSA warrants further investigation, and modification of resection/reconstruction techniques.

Fibula Jaw-in-a-Day with Minimal Computer-Aided Design and Manufacturing: Maximizing Efficiency, Cost-Effectiveness, Intraoperative Flexibility, and Quality.

SUMMARY: The vascularized fibular flap has been the mainstay for mandibular reconstruction for over 30 years. Its latest evolutionary step is the jaw-in-a-day operation, during which the fibula flap and dental prosthesis restoration are performed in a single stage. Computer-aided design and manufacturing technology in mandibular reconstruction has gained popularity, as it simplifies the procedure and produces excellent outcomes. However, it is costly, time-consuming, and limited in cases that involve complex defects, including bone and soft-tissue coverage. Moreover, it does not allow for intraoperative changes in the surgical plan, including defect size and recipient vessel selection.The authors describe their approach, including a conventional technique for fibula osteoseptocutaneous flap harvest without the need for a premanufactured cutting guide, using bundled wooden tongue spatulas instead, a stereolithographic model to customize commercially ready-made reconstruction plates, and two pieces of resin to maintain occlusive alignment of the remaining jaw segments during mandibular osteotomy. Dental implants are inserted free-hand. Vector guides are then connected to the implants following insertion into the fibula to confirm acceptable alignment and subsequently replaced with scan sensors. An intraoperative digital scan is used to design and to produce a dental prosthesis by in-house milling of a polymethylmethacrylate block. From our 10-case experience over the past 3 years, we have found that our approach offers a reliable method that matches the excellent outcomes seen using full computer-assisted design and manufacturing technology. It is time- and cost-effective, not limited to relatively simple jaw defects, and can readily accommodate intraoperative changes of surgical plan.

Long-term outcome of patients with or without osseointegrated implants after resection of mandibular ameloblastoma and reconstruction with vascularized bone graft: Functional assessment and quality of life.

BACKGROUND: The optimal management after the resection of mandibular ameloblastoma has been very challenging to surgeons. The aim of this study is to evaluate the functional, aesthetic, and quality of life outcomes of patients who had a segmental mandibular resection and immediate reconstruction with or without osseointegrated implants. METHOD: Patients' demographics, tumor characteristics, treatment, and complications were retrieved. Patients were divided into two groups: dental rehabilitated vs. nondental rehabilitated depending on the placement of osseointegrated implants followed by an implanted-retained prosthesis. Functional outcomes and quality of life were assessed using the Performance Status Scale, the University of Washington Quality of Life (UW-QOL) scale, and the 14-item Oral Health Impact Profile (OHIP-14). Aesthetic outcome was evaluated by patients using a Visual Analog Scale. RESULTS: Thirty-four patients were reviewed. Twenty-two patients were included in the dental rehabilitated group and 12 in the nondental rehabilitated group. No recurrence of the tumor was found during the average follow-up period of 7.4 years. Although both groups reported a similar satisfaction in appearance, patients in the dental rehabilitated group scored significantly higher in masticatory function and "eating in public" (p < 0.01). There were significant differences (p < 0.05) regarding "chewing," "activity," and "anxiety" when assessed using the UW-QOL scale. Indeed, patients in the dental rehabilitated group showed a definitively better outcome in "physical disability" and "psychological discomfort" dimensions when assessed using the OHIP-14. CONCLUSION: Vascularized bone graft reconstruction followed by immediate or delayed placement of osseointegrated implants showed as an ideal and predictable treatment modality for patients with ameloblastoma. The results suggested that patients with osseointegrated implants had a significantly better masticatory function, improved quality of life, and less psychological consequences.

Trismus Secondary Release Surgery and Microsurgical Free Flap Reconstruction After Surgical Treatment of Head and Neck Cancer.

This article addresses trismus following head and neck cancer ablation and free flap reconstruction whether or not radiotherapy has been utilized. The focus is to achieve durable and favorable outcomes and avoid untoward results. To aid surgeons in fulfilling these goals, key factors, including adequate release surgery, optimal free flap selection and reconstruction, long-lasting results, and the untoward outcomes specific to trismus release and reconstruction surgery and how to avoid them have been investigated and discussed based on the authors' experience in this surgery.

Aesthetic and functional mandibular reconstruction with immediate dental implants in a free fibular flap and a low-profile reconstruction plate: five-year follow-up.

BACKGROUND: Aesthetic and functional mandibular reconstruction can be achieved in 1-stage. It involves simultaneous dental implant placement in a free vascularized fibula transfer with a low-profile reconstruction plate. The aim of this study was to assess the postoperative aesthetic profile and oral functional result. MATERIAL AND METHODS: Ten patients with a mean age of 31.6 years and an average follow-up time of 83.7 months underwent 1-staged mandibular reconstructions after segmental mandibulectomies. Simultaneous dental implantation was placed at the fibular segment according to the maxillary dentition. The fibula-implant construct was stabilized superiorly with miniplates and an additional low-profile reconstruction plate recreated the inferior mandibular contour. Any remaining vascularized soft tissue was used for augmentation. Palatal mucosa grafts were placed around the dental implant healing abutment at the uncovering stage surface. Aesthetic profile and oral function were evaluated postoperatively for 5 years. RESULTS: All microsurgical transplantations were successful. None of the patients required subsequent revisions. All patients completed prosthodontic rehabilitation. All patients had palatal mucosal grafts placed around the dental implants. The mean probing pocket depths were shallower around the implants, 3.09 ± 0.82 mm at mesial, 3.33 ± 1.05 mm at distal, 3.02 ± 1.13 mm at buccal, and 3.23 ± 1.17 mm at lingual surfaces. Radiographs revealed no statistical differences in mean of the mesial [0.27 ± 0.26 mm] and distal [0.33 ± 0.25 mm] of peri-implant bone loss. The prosthetic load mean follow-up time was 71.7 months with a satisfactory implant-supported prosthesis. Two slender female patients palpated the reconstruction plate beneath the soft tissue envelope. CONCLUSIONS: This approach is selectively fashioned for patients with benign disease when the overlying soft tissue drape is adequate. The technique described results in improved appearance and function through definition of the lower third of the face and simultaneous dental implant replacement.

Using the T-scan III system to analyze occlusal function in mandibular reconstruction patients: a pilot study.

BACKGROUND: This study was designed to analyze the post-rehabilitation occlusal function of subjects treated with complex mandibular resection and subsequently rehabilitated with fibula osteoseptocutaneous flaps, dental implants, and fixed prostheses utilizing the T-scan system. METHODS: Ten mandibular complex resection cases that adopted fibula osteoseptocutaneous flaps, dental implants, and fixed prostheses to reconstruct occlusal function were analyzed. The mandibular reconstructions were divided into three groups based on size: full mandibular reconstructions, mandibular reconstructions larger than half of the arch, and mandibular reconstructions smaller than half of the arch. The T-scan III system was used to measure maximum occlusal force, occlusal time, anterior-posterior as well as left-right occlusal force asymmetries, and anterior-posterior as well as left-right asymmetrical locations of occlusal centers. RESULTS: Subjects with larger mandibular reconstructions and dental implants with fixed partial dentures demonstrated decreased average occlusal force; however, the difference did not reach the statistically significant level (p > 0.05). The most significant asymmetry of occlusal center location occurred among subjects with mandibular reconstructed areas larger than half of the mandibular arch. CONCLUSIONS: Comparison of the parameters of T-scan system used to analyze the occlusal function showed that the occlusal force was not an objective reference. Measurements of the location of the occlusal center appeared more repeatable, and were less affected by additional factors. The research results of this study showed that the size of a reconstruction did not affect the occlusal force after reconstruction and larger reconstructed areas did not decrease the average occlusal force. The most significant parameter was left and right asymmetry of the occlusion center (LROC) and was measured in subjects with reconstruction areas larger than half of the arch.

Using pneumo-computerized tomography as a quantitative assessment of result in submucous fibrosis patients treated with surgical release and free flap reconstruction.

OBJECTIVE: This study investigates the efficacy of oral submucous fibrosis release and free flap reconstruction. STUDY DESIGN: Pneumo-computerized tomography (pneumo-CT) was used to evaluate postoperative changes in the buccal vestibular volume during maximum blowing. METHODS: From March 2003 to November 2008, 9 patients underwent 18 microvascular flap reconstructions after oral submucous fibrosis release. The preoperative and postoperative buccal vestibular volumes were determined by capturing the air density in the selected region on CT images, which were composed of 0.75-mm-thick slices that were then summated using analysis software (Biomedical Imaging Resource; Mayo Foundation, Rochester, MN). RESULTS: Postoperative results were measured for a mean follow-up period of 15 months (range, 6-36 mo). There was significant improvement in the interincisal distance from 12.44 (8.35) mm preoperatively to 32.56 (7.322) mm postoperatively (P = 0.000). There was an accompanying significant increase in the buccal vestibular volume from 5.66 (3.92) mL preoperatively to 9.38 (4.96) mL postoperatively on the right side (P = 0.032) and from 6.44 (4.20) mL preoperatively to 9.64 (4.65) mL postoperatively (P = 0.048) on the left side. CONCLUSIONS: Adequate release of the mucosa and resurfacing with a free flap can increase the interincisal distance and improve the maximal buccal vestibular volume. Air-contrast pneumo-CT studies demonstrate an improvement in buccal mucosal elasticity.

Outcome of osseointegrated dental implants in double-barrel and vertically distracted fibula osteoseptocutaneous free flaps for segmental mandibular defect reconstruction.

BACKGROUND: Osseointegrated dental implants in double-barrel, or single-barrel and then vertically distracted, fibula osteoseptocutaneous free flaps can achieve segmental mandibular reconstruction, dental rehabilitation, and premorbid facial height. However, it remains unknown which configuration provides better osseointegration outcomes. METHODS: Between 2003 and 2009, all patients who underwent segmental mandibular defect reconstruction using vertical distraction osteogenesis of single-barrel fibula with secondary osseointegration (group A, 10 patients and 35 osseointegrated dental implants) or double-barrel fibula with primary osseointegration (group B, 13 patients and 36 osseointegrated dental implants) were evaluated prospectively for crown-implant ratios, mesial/distal marginal bone losses, and complications. In group B, 18 osseointegrated dental implants were surrounded by palatal mucosal grafts; the other retained fibula skin paddles. RESULTS: Palatal mucosal grafts in group B improved mesial (p<0.001) and distal (p<0.001) marginal bone losses. Mesial marginal bone loss of group B with palatal mucosal grafts was better than that of group A (p<0.05), despite higher crown-implant ratios in group A (p<0.01). Mesial (p<0.01) and distal (p<0.05) marginal bone losses of group A were better than that of group B osseointegrated dental implants without palatal mucosal grafts. Complications in group A were common and complex, unlike group B. All patients completed dental rehabilitation. CONCLUSIONS: Osseointegration was adequate to complete dental rehabilitation in group B without palatal mucosal grafts, but was significantly better in group A, and significantly best in group B with palatal mucosal grafts. Given the complexity and frequency of complications in group A, the authors recommend the double-barrel configuration with osseointegrated dental implants for segmental mandibular defect reconstruction. Palatal mucosal grafts have a definite advantage. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, III.

Free flap reconstruction after surgical release of oral submucous fibrosis: long-term maintenance and its clinical implications.

BACKGROUND AND AIM: Oral submucous fibrosis (OSF) is an insidious disease with progressive limitation of mouth opening and potential malignant change of the oral mucosa. Cancer surveillance is of utmost importance, but it is often limited by severe trismus. Surgical release and free flap reconstruction is effective but its long-term efficacy has not been completely established. This work aims to review our experience in the past 15 years in surgical release of OSF-related trismus followed by free flap reconstruction. METHODS: Patient's age, gender, smoking history, drinking history and betel-nut consumption history were retrieved. Surgical release and reconstructive procedures were detailed. Inter-incisor distances (IIDs) were measured preoperatively (PO-IID), intra-operatively after maximal release (IO-IID) and during the last follow-up (FU-IID). Subsequent development of oral cancers (oral squamous cell carcinoma, OSCC) and relevant details were documented. Potential predictors of long-term IID gain were analysed. RESULTS: A total of 92 patients were included in our study. There was a significant difference (p = 0.000) in PO-IID (13.8 ± 6.6 mm) and FU-IID (27.2 ± 8.8 mm) indicating the long-term efficacy of the release procedure. The mean long-term IID gain was 13.0 ± 7.5 mm. Bilateral coronoidectomy resulted in a greater degree of intra-operative gain in IID (p = 0.025). PO-IID (r = -0.277, p = 0.001) and intra-operative gain in IID (r = 0.198, p = 0.001) were found to be predictive of long-term IID gain. Ten patients (11%) developed OSCC during our study period. CONCLUSIONS: Aggressive surgical release (with bilateral coronoidectomy if necessary) followed by free flap reconstruction is an effective treatment for OSF-related trismus. Our study has confirmed its long-term efficacy and its important role in cancer surveillance.

Inferior alveolar nerve reconstruction with interpositional sural nerve graft: a sensible addition to one-stage mandibular reconstruction.

BACKGROUND: This study was to evaluate the sensory recovery in the lower lip and chin in patients who underwent segmental mandibulectomy involving inferior alveolar nerve and simultaneous reconstruction with fibular osteoseptocutaneous flap and interposition sural nerve graft. MATERIAL AND METHOD: From 1993 to 2004, a total of 20 patients underwent segmental mandibulectomy, simultaneous fibula osteoseptocutaneous flap reconstruction and interpositional sural nerve graft. Twelve patients were available for the study. There were seven male and five female patients with average age of 35.8 years (16-52 years). The sense at the lower lip and chin was measured by two-point discrimination both at the operated and non-operated side at an average of 64.3 months (12-146 months). RESULT: The operated side revealed an average of 13.7 mm for static (STPD) and 13.3 mm for moving two-point discrimination (MTPD) at the lower lip and 13.7 mm for static and 13.4 mm for MTPD at the chin. Data from the non-operated side averaged 3.4 mm for static and 3.2 mm for MTPD at lower lip and 5.1 mm for static and 4.5 mm for moving discrimination at the chin. All patients recovered better than protective sensation on the operated side, which was sufficient to prevent self-mutilation, preserve comprehensible speech and maintain oral competence. No patient complained of significant donor site morbidity. CONCLUSION: Simultaneous reconstruction of a segmental mandibulectomy involving inferior alveolar nerve with a fibula osteoseptocutaneous flap and interpositional sural nerve graft offers simultaneous replacement of mandibular architecture and restoration of protective perioral sensation.

Dental implant outcome after primary implantation into double-barreled fibula osteoseptocutaneous free flap-reconstructed mandible.

BACKGROUND: Functional and aesthetic mandibular reconstruction can be achieved in a single operation by means of a double-barreled fibula osteoseptocutaneous free flap with dental implants loaded simultaneously into the upper barrel. The aim of this study was to evaluate the quality and result of such reconstruction. METHODS: From 2005 to 2007, 10 patients underwent segmental mandibular defect reconstructions with double-barreled fibula osteoseptocutaneous flaps and simultaneous dental implantations. Implant marginal bone loss, clinical mucosal changes, marginal plaque indices, bleeding on probing, and pocket probe depth were evaluated at an average of 22.2 months after implant functional loading. RESULTS: Ten patients with a total of 25 osseointegrated implants were evaluated. The mean implant marginal bone loss was 0.18 ± 0.18 mm (range, 0 to 0.6 mm) at the mesial surfaces and 0.25 ± 0.2 mm (range, 0 to 0.6 mm) at the distal surfaces. Probing pocket depth was shallower for implants protected by palatal mucosal grafts (2.56 ± 0.54 mm) than by skin flaps (3.50 ± 0.90 mm) (p < 0.05). There was a significant difference in marginal bone loss between palatal mucosal grafts (0.11 ± 0.09 mm) and skin flaps (0.29 ± 0.23 mm) (p < 0.05). Bleeding on probing was more prominent when pocket depth exceeded 5 mm and occurred more frequently in skin flap-protected than in keratinized mucosa graft-protected implants. CONCLUSIONS: The one-stage combined surgical method is safe and reliable. Both oral function and mandible contour were good. Firmly attached gingiva-like palatal mucosal grafts prevent periimplant soft-tissue inflammation and facilitate maintenance of oral hygiene. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, V.

Harnessing the potential of the free fibula osteoseptocutaneous flap in mandible reconstruction.

BACKGROUND: The free fibula osteoseptocutaneous flap remains the first choice for segmental mandible and contiguous soft-tissue defect reconstructions in most situations. METHODS: Several important principles are described that should be respected during skin paddle design: fibula contouring, insetting, and fixation, and dental implant osseointegration. Recent advancements that address difficulties in height contouring, particularly at the anterior segment, are highlighted. RESULTS: The presented methods can help provide an optimal mandibular reconstruction that restores mechanical functions, facial aesthetics, and complete dental competence. CONCLUSION: Efficient interdisciplinary communication and teamwork are necessary throughout the longitudinal care of the patient if optimal results are to be achieved.

Reconstruction of the buccal mucosa following release for submucous fibrosis using two radial forearm flaps from a single donor site.

BACKGROUND: Oral submucous fibrosis is a collagen disorder affecting the submucosal layer and can severely limit mouth opening. The use of bilateral forearm flaps to fill buccal defects following trismus release has proven to be effective and reliable. However, it requires the sacrifice of radial arteries from both forearms. We have developed a technique that allows for the harvest of two independent flaps from a single forearm donor site. METHODS: Two separate flaps are designed on the same radial artery and concomitant vein pedicle. The distal flap is marked in the standard fashion and the proximal skin paddle is designed in the middle third of the forearm, based on septocutaneous branches of the radial artery. The two flaps are elevated and subsequently divided into two independent free flaps. Between June 2004 and June 2007, a total of 16 flaps were harvested from eight donor sites for buccal mucosa defects following trismus release. Improvements in mouth opening and buccal pliancy were evaluated by comparing preoperative and postoperative inter-incisal distance (IID) and maximal mouth capacity. RESULTS: All flaps survived completely, and all donor sites were closed primarily, except for one. The mean flap size was 6.6x2.6cm (range: 6x2.5cm-7x3cm), mean pedicle length was 5.7cm, mean ischaemia time was 46min and mean total operating time was 8h 45min. At an average of 19.8 months follow-up, the inter-incisal distance averaged 29.13mm, an increase of 20.88mm compared with the preoperative measurement. The maximal mouth capacity averaged 55.63cc, an increase of 9.38cc compared with the preoperative measurement. CONCLUSION: Two independent small flaps can be harvested safely from one radial forearm donor site. This approach is a useful option for reconstruction of bilateral buccal defects, particularly following submucous fibrosis release. The donor-site morbidity is minimal and limited to one forearm.

Complete rehabilitation of the mandible following segmental resection.

Segmental resection of the mandible leads to significant patient morbidity. Loss of mandibular support to the teeth, tongue and lip causes dysfunctional mastication, swallowing, speech, airway protection and oral competence. Patients also suffer disfigurement following segmental mandibulectomy because the mandible is an important aesthetic landmark. The degrees to which dysfunction and disfigurement occur depend both on the location of the mandibular segment removed and the amount of surrounding soft tissue excised. Between January 1985 and December 2004, 780 fibula osteoseptocutaneous flaps have been used for head and neck reconstruction at the Chang Gung Memorial Hospital, Taiwan. The fibula flap has proven to be the bony flap of choice because it has a lengthy bicortical segment of bone available, a reasonably long vascular pedicle, large diameter vessels, good bone quality, and is easily contoured with multiple osteotomies. The flap can be harvested while ablation is being performed. In addition, a reliable, mobile, thin skin component can always be included to address the soft tissue reconstructive requirements. A chimeric design employing a portion of the soleus muscle can provide further reconstructive options. Ideally complete rehabilitation of the mandible involves placement of titanium osseointegrated implants, which allow dental restoration. Primary placement of implants is preferred in patients without cancer. Selection of candidates to receive osseointegrated implants is paramount. The temporomandibular joint remains a challenge to reconstruct adequately.

Release and free flap reconstruction for trismus that develops after previous intraoral reconstruction.

BACKGROUND: Oral cancer patients receive wide excision of oral structures and reconstruction of the intraoral defects with skin grafts and/or local, regional, or free flaps. Trismus is a common postoperative sequela, even without postoperative radiotherapy. Trismus decreases patients' quality of life and can have detrimental effects on their oral hygiene and nutritional status. METHODS: Between May of 1999 and June of 2003, 11 patients were operated on for release of trismus and reconstruction after previous intraoral reconstructions. The patients had been reconstructed with skin grafts (n = 4), radial forearm flaps (n = 3), anterolateral thigh flaps (n = 1), artificial dermis (n = 1), radial forearm flaps with skin grafts (n = 1), and pedicled pectoralis major flaps with skin grafts (n = 1). Eight patients had received postoperative radiotherapy. The patients presented with a mean interincisal distance of 3.1 mm (range, 0 to 10 mm). RESULTS: After trismus release, the intraoral soft-tissue defects were reconstructed with one or two free flaps (six anterolateral thigh flaps, nine forearm flaps, and one fibula osteoseptocutaneous flap). Fifteen of the 16 flaps were successful, with one flap failure. Average interincisal distance was 33.4 mm immediately after the release (range, 27 to 35 mm) and 18.9 mm (range, 5 to 30 mm) at a mean follow-up time of 22.7 months (16.1 mm in the radiated group and 26.3 mm in the nonradiated group). The mean amount of improvement was 15.8 mm. CONCLUSION: The use of free flaps to reconstruct the defects created after trismus release in patients with previous intraoral reconstruction is a viable option that yields reasonable, long-lasting improvements in mouth opening, intraoral hygiene, and quality of life.

A non-tooth-borne mouth-opening device for postoperative rehabilitation after surgical release of trismus.

BACKGROUND: The treatment of severe trismus requires a combination of surgical release and postoperative rehabilitation; the latter is essential for preventing a relapse due to postoperative inactivity and scarring. Mouth-opening devices for this purpose are placed between or fixed to the teeth to keep the dental arches apart; but patients suffering from severe trismus often present with partially or totally edentulous arches, decayed teeth, or periodontitis, which do not allow for the use of such devices. METHODS: In this article, a new mouth-opening device is described. It applies force to two intraoral screws placed in the vestibulum of the maxillary and mandibular bones. It can be used in patients with poor dental conditions and allows rehabilitation to start immediately after trismus release. RESULT: A case is presented. The interalveolar distance was improved from 5 mm to 45 mm and maintained at 6-month follow-up. CONCLUSION: Our non-tooth-borne mouth opening device is useful for postoperative rehabilitation after surgical release of trismus.

Microvascular free tissue transfer for treatment of osteoradionecrosis of the maxilla.

Head and neck tumors often require radiotherapy as part of the treatment protocol. Although it improves the survival rate in cancer patients, it may cause osteoradionecrosis, especially in the mandible and maxilla. Twelve patients with osteoradionecrosis of the maxilla were treated with microsurgical free tissue transplantations between April of 1996 and August of 2002. There were 10 male and two female patients, with a mean age of 60.2 years. The mean radiotherapy dose was 6674 cGy. The radiation dose could not be traced in three patients because radiotherapy was performed elsewhere. Radical sequestrectomy, soft-tissue debridement, and pathologic proof of no tumor recurrence were performed before microsurgical reconstruction. Free flaps used included the following: anterolateral thigh (n = 7), radial forearm (n = 2), rectus femoris musculocutaneous (n = 2), and supracondylar chimeric (n = 1) flaps. All flaps survived completely and reconstruction succeeded. During a mean 25-month follow-up period, ectropion, plate exposure, and mild infection were encountered in three patients and treated successfully. Radical debridement and obliteration of dead space with well-vascularized tissue are essential for successful treatment of maxillary osteoradionecrosis. The anterolateral thigh flap is most versatile for almost all types of soft-tissue defect reconstruction in the head and neck region.