Aim: This study aimed to evaluate temporomandibular joint reconstruction in Yemeni children with metatarsal bone graft after release of ankylosis. Methodology: Ten patients ≤12 years of age, comprising eight unilateral and two bilaterally TMJ ankylosis, were selected for this study.These patients underwent reconstruction with 10 non-vascularized metatarsal grafts. The reconstructed joints were then followed for an average of 1 year.Measures of opening, symmetry, and clinical symptoms relating to the recons-

Objective: To compare between the conventional and modified preauricular incision approaches to the management of temporomandibular joint (TMJ) ankylosis among Yemeni patients in Sana’a city, Yemen. Methods: This comparative clinical study recruited ten patients (7 males and 3 females; age range: 6–35 years) with true fully or partially bony or fibrous TMJ ankylosis. These patients were admitted to and followed up in the Department of Oral and Maxillofacial Surgery, College of Dentistry, University of Science and Technology Hospital in Sana’a in the period from May 2013 to February 2016. Five patients with condylar capsule ankylosis were subjected to the conventional preauricular approach, while the other five cases with ankylosis that extends beyond the condylar capsule and reaches the zygomatic arch were subjected to the modified preauricular approach. Both approaches were evaluated and compared for the time required, intra- and post-operative complications and aesthetic results. Results: The mean times required to carry out the operations were 4.45 and 3.20 hours for conventional and modified preauricular approaches, respectively.Facial nerve injury was present in two patients undergoing the conventional preauricular approach, but this reversed to normal after four to five months. Patient of both groups experienced no facial paralysis or post-operative auriculotemporal syndrome. Intra-operative bleeding was mild to moderate among the patients of both approaches, and none of the patients required blood transfusion intra- or post-operatively. Major blood vessels were injured in three cases undergoing the conventional preauricular approach. All patients subjected to both approaches showed satisfactory aesthetic end results. Conclusions: Conventional and modified preauricular approaches provide excellent accessibility and visibility to the surgical field during the management of TMJ ankylosis among Yemeni patients, with the latter being slightly superior. In addition, the modified preauricular approach is associated with fewer complications, absence of facial nerve injury and reduced surgical time compared to the conventional approach.

Objective: To compare between the conventional and modified preauricular incision approaches to the management of temporomandibular joint (TMJ) ankylosis among Yemeni patients in Sana’a city, Yemen. Methods: This comparative clinical study recruited ten patients (7 males and 3 females; age range: 6–35 years) with true fully or partially bony or fibrous TMJ ankylosis. These patients were admitted to and followed up in the Department of Oral and Maxillofacial Surgery, College of Dentistry, University of Science and Technology Hospital in Sana’a in the period from May 2013 to February 2016. Five patients with condylar capsule ankylosis were subjected to the conventional preauricular approach, while the other five cases with ankylosis that extends beyond the condylar capsule and reaches the zygomatic arch were subjected to the modified preauricular approach. Both approaches were evaluated and compared for the time required, intra- and post-operative complications and aesthetic results. Results: The mean times required to carry out the operations were 4.45 and 3.20 hours for conventional and modified preauricular approaches, respectively.Facial nerve injury was present in two patients undergoing the conventional preauricular approach, but this reversed to normal after four to five months. Patient of both groups experienced no facial paralysis or post-operative auriculotemporal syndrome. Intra-operative bleeding was mild to moderate among the patients of both approaches, and none of the patients required blood transfusion intra- or post-operatively. Major blood vessels were injured in three cases undergoing the conventional preauricular approach. All patients subjected to both approaches showed satisfactory aesthetic end results. Conclusions: Conventional and modified preauricular approaches provide excellent accessibility and visibility to the surgical field during the management of TMJ ankylosis among Yemeni patients, with the latter being slightly superior. In addition, the modified preauricular approach is associated with fewer complications, absence of facial nerve injury and reduced surgical time compared to the conventional approach.

Objective: To compare between the conventional and modified preauricular incision approaches to the management of temporomandibular joint (TMJ) ankylosis among Yemeni patients in Sana'a city, Yemen. Methods:This comparative clinical study recruited ten patients (7 males and 3 females; age range: 6-35 years) with true fully or partially bony or fibrous TMJ ankylosis. These patients were admitted to and followed up in the University of Science and Technology Hospital in Sana'a in the period from May 2013 to February 2016. Five patients with condylar capsule ankylosis were subjected to the conventional preauricular approach, while the other five cases with ankylosis that extends beyond the condylar capsule and reaches the zygomatic arch were subjected to the modified preauricular approach. Both approaches were evaluated and compared for the time required, intra-and post-operative complications and aesthetic results. Results:The mean times required to carry out the operations were 4.45 and 3.20 hours for conventional and modified preauricular approaches, respectively.Facial nerve injury was present in two patients undergoing the conventional preauricular approach, but this reversed to normal after four to five months. Patient of both groups experienced no facial paralysis or post-operative auriculotemporal syndrome. Intra-operative bleeding was mild to moderate among the patients of both approaches, and none of the patients required blood transfusion intra-or post-operatively. Major blood vessels were injured in three cases undergoing the conventional preauricular approach. All patients subjected to both approaches showed satisfactory aesthetic end results. Conclusions:Conventional and modified preauricular approaches provide excellent accessibility and visibi lity of the surgical field during the management of TMJ ankylosis among Yemeni patients, with the latter being slightly superior. In addition, the modified preauricular approach is associated with fewer complications, absence of facial nerve injury and reduced surgical time compared to the conventional approach.

Objectives: A systematic review was conducted to evaluate effectiveness and safety of beta carotenes for the treatment of oral leukoplakia regarding clinical resolution and prevention of malignant transformation. Material and Methods: The systematic search was conducted in three electronic databases and the study's selection was performed according to pre-set eligibility criteria. Four studies evaluating the efficacy of beta carotenes in oral leukoplakia compared to placebo were included in the review; three of which were assigned for quantitative analysis. Data were extracted, tabulated, quality assessed and statistically analyzed. Results: The metaanalysis revealed that when comparing clinical resolution the beta carotene group favored was favored compared to placebo, with statistically significant difference. However, a meta-analysis comparing beta carotene and placebo groups regarding malignant transformation as a primary outcome failed to show any significant benefit. Furthermore, results showed evidence of beta carotene safety. Conclusion: the overall quality of evidence about efficacy of beta carotene in oral leukoplakia treatment was not high. However, given the obvious safety of this agent, data suggests it could have a promising effect in clinical improvement of oral leukoplakia lesions. However, no evidence supporting its benefits in reducing risk of malignant transformation in these lesions was found. Therefore, further long term, well designed randomized clinical trials are highly recommended.