Overgrowth of costochondral graft in temporomandibular joint ankylosis: An unusual case

Unveiling Symmetry Through Orthodontic-Surgical Management of Unilateral Mandibular Condylar Agenesis: A Rare Case Report

This is a rare clinical case report of a 19-year-old male patient reported in the Department of Orthodontics and Dentofacial Orthodontics, Sharad Pawar Dental College, Sawangi (Meghe), Wardha, Maharashtra, with chief complaint of asymmetry present on the lower left side of the face and forwardly placed upper front teeth. The asymmetry was due to the congenital complete absence of the left condyle and skeletal cant in the maxilla and functional occlusal plane. The true agenesis of the condyle is an extremely rare condition that requires proper diagnosis and interdisciplinary management. In this case, there was left-sided condylar agenesis with no other skeletal anomaly present, which was treated by pre-surgical orthodontics for decompensation and surgical correction of skeletal cant followed by Ramal distraction osteogenesis and advancement genioplasty. A condylar stock metal implant was placed on the left side for functional rehabilitation. The patient expressed satisfaction with the aesthetic and functional improvements, highlighting the effectiveness of the integrated orthodontic-surgical approach.

Modified Osteotomy for TMJ Ankylosis in Paediatric Patients with Deficient Interpositional Temporalis Muscle Mass and Buccal Fat Pad - A case Series and Literature Review

Ankylosis of the temporomandibular joint (TMJ) is a bony or fibrous fusion of the articular surfaces of the mandibular condyle and the glenoid fossa. Gap arthroplasty, Interpositional arthroplasty, Condyle reconstruction with autogenic or alloplastic grafts and total joint replacement are some common modalities of management. In this article, we discuss a series of three cases of unilateral TMJ ankylosis in paediatric patients, managed by gap arthroplasty using a modified osteotomy cut. The modification was adapted due to inadequate interpositionable temporalis muscle or buccal fat on the affected side and chances of adaptive remodelling of the CCG (Costochondral graft), if placed were rendered negative.

A single-stage computer-guided gap arthroplasty with simultaneous patient-specific total joint replacement with a novel flat fossa design: A case report

INTRODUCTION AND IMPORTANCE

The computer-guided approach for the patient-specific TMJ replacement is considered an ultimate reliable option in advanced cases. However, dislocation of the condylar head could happen with the concave fossa design. A flat design was described and used in this case.

CASE PRESENTATION

A 15 years old male patient with mandibular asymmetry and class IV recurrent ankylosis of the right TMJ received a patient-specific artificial joint with computer-guided gap arthroplasty and orthognathic corrective mandibular surgery for the left side. The fossa component was made entirely flat, and the patient was followed up over the next year.

CLINICAL DISCUSSION

Customized TMJ prosthetic solutions are reliable in advanced cases, especially when facial corrections are indicated; however, the commonly used concave design showed reported dislocations requiring some design modifications as proposed in the presented case.

CONCLUSION

The flat fossa design of the artificial TMJ secures the same results as the anatomical fossa design without the incidence of dislocation.

[Long-term effects of autogenous coronoid grafts on the facial growth of children with unilateral temporomandibular joint ankylosis and reconstructed mandibular condyle]

OBJECTIVE

Mandibular condyle injury usually results in malocclusion and disharmony of facial growth in growing children. This study aimed to evaluate the long-term effects of autogenous coronoid grafts on the facial growth of children with unilateral temporomandibular joint (TMJ) ankylosis who underwent mandibular condyle reconstruction.

METHODS

Ten growing patients with unilateral bony TMJ ankylosis admitted in West China Hospital of Stomatology, Sichuan University between January 1st, 2008 and December 31st, 2016 were followed up and evaluated. These patients include three males and seven females with ages ranging from 5 years to 12 years at the time of surgery. Each patient underwent gap arthroplasty, condyle reconstruction with ipsilateral coronoid, and interposition of the pedicled temporalis fascial flap in a single operation. The postoperative follow-up ranged from 3 years to 8 years with an average of 4.9 years. Postoperative panoramic radiographs determined the growth of the mandibular height and length on the affected side and compared it with those of the healthy side.

RESULTS

All patients recovered uneventfully after surgery. At the end of follow-up period, the maximal mouth opening ranged from 32 mm to 41 mm with an average of 35.6 mm. Mandibular height and length continued to grow after the successful treatment of ankylosis using autogenous coronoid grafts for condyle reconstruction. However, growth deficit still existed. The final ramus height and mandibular length of the affected side at the end of follow-up increased by 25.3% (P<0.05) and 26.1% (P<0.05), respectively, compared with the initial values measured immediately after surgery. Growth rates of ramus height and mandibular length of the affected side were 47.1% and 27.2% lower (P<0.05) than those of the healthy side, respectively.

CONCLUSIONS

Mandibular height and length continued to grow after the successful treatment of ankylosis by using autogenous coronoid grafts for condyle reconstruction. However, growth deficit still existed. The growth rate of the affected mandible was reduced compared with that of the undisturbed side even after treatment of ankylosis.

Remodeling of Neocondyle

Temporomandibular joint (TMJ) ankylosis in children is one of the most complex and challenging problems managed by oral and maxillofacial surgeons. TMJ ankylosis in growing children often leads to facial deformity, difficulty in chewing and swallowing, severe malocclusion, poor oral hygiene, multiple decayed teeth, and impairment of speech. A good functional and esthetic outcome can be achieved after reconstruction with the autogenous grafts. Here, we present a case of a 9-year-old patient treated with condylectomy and ipsilateral coronoidectomy, followed by reconstruction with costochondral graft with 5 years of follow-up. During this period, the reconstructed graft remodeled into a neocondyle and also regrowth of the coronoid process. The mouth opening and facial symmetry were acceptable.

Surgical treatment of type III temporomandibular joint ankylosis with a lateral arthroplasty while retaining the medially displaced condyle

INTRODUCTION

We discuss our findings on the retention of the medially displaced residual condyle during the treatment of type III temporomandibular joint ankylosis, as well as the postoperative results observed during follow-up.

MATERIALS AND METHODS

Thirty-two patients with type III temporomandibular joint ankylosis that met the inclusion criteria of the study were included as subjects. The morphological integrity of the medially displaced residual condyle was verified in all of the participating patients through the use of cone beam computed tomography. The duration of the ankylosis ranged from 2 to 12 years. The maximum length that patients were able to open their mouths ranged from 6 mm to 14 mm. The surgical treatments used in this report included the separation of bony fusions between the condyle and the glenoid fossa, resection of the ankylosed sites, preservation of the displaced condyles in their medial position and suturing the remains of the disc to its typical position or taking the temporalis myofascial flap instead. The long-term results were evaluated by computed tomography and clinical follow-up examinations.

RESULTS

Three-year postoperative follow-up examinations were performed for all of the patients included in this study. No recurrences were observed in the patients who adhered to the postoperative therapeutic advice. Patients had an average maximal mouth opening distance of 34.50 ± 5.75 mm as recorded during the final follow-up examination.

CONCLUSIONS

The released medially residual condyle can still function normally in temporomandibular joint movement and without reankylosis after a bone fusion resection. The displaced condyle should thus be preserved instead of being removed during the treatment of type III temporomandibular joint ankylosis.