241 level II was involved in three patients, level IV in two patients and level V in three patients. Two patients had lymphovascular invasion. Six patients had perineural invasion and 12 patients had perinodal invasion of tumour. Conclusion: As the stage of tumour increased, the levels involved in neck also increased. In stage I, II and III patients level II was consistently involved by tumour and in stage III and IV level IV was consistently involved.
stiffness (U, 43.24 mN-m/deg; P, 36.12 mN-m/deg; M, 30.96 mNm/deg), and yield rotation (U, 12.37◦ ; P, 19.38◦ ; M, 25.49◦ ). These results indicate increased biomechanical stability in U plates, closely followed by P plates. Conclusion: The manipulation of stock miniplates causes irreversible damage to their biomechanical architecture, leading to unpredictable functional recovery and plate fractures. http://dx.doi.org/10.1016/j.ijom.2017.02.814
http://dx.doi.org/10.1016/j.ijom.2017.02.812 Vascular anomalies of head and neck Frequency, pattern and treatment modalities of mandibular fracture
M. Burgue˜no ∗ , J.C. Lopez, T. Gonzalez, P. Losa
T. Ayoob ∗ , N. Rashid, S. Shaifque, S. Ahmed
La Paz Hospital, Madrid, Spain
Liaquat College of Dentistry, Dahrul Sehat Hospital, Karachi, Pakistan
Background: Vascular malformations affect the head and neck in almost 50% of the patients. Usually they become evident during the childhood, some conditions like pregnancy, trauma, puberty may trigger the growing of the lesion. Objectives: We present our experience based on the treatment of more than four thousand cases of vascular malformation and our protocol of treatment. Interdisciplinary collaboration is required to understand and treat patients with the broad spectrum of vascular anomalies. Treatment choice is difficult and many times the only goal is control of shunting and palliation of the clinical manifestations. Methods: We present two patients with life-threatening bleeding, functional and cosmetic deformity and progressive growth which were treated with radical surgery and previous embolisation. The first patient had an arteriovenous malformation in the frontal area that affect orbit, nose, frontal encephalic lobe and cheek. Our concern about an intracranial bleeding, that would have been mortal, obliged us to operate. The second patient had an arteriovenous malformation over the parotid gland area which affected the facial nerve. We decided to remove completely the malformation and reconstruct the defect with anterolateral free flap at the same time we performed a nerve graft to reconstruct the facial nerve. Conclusions: Vascular malformations require a multidisciplinary approach, It is crucial to do a precise diagnose to treat them accordingly. In severe cases of venous or arteriovenous malformation that it is possible to remove the malformation completely, surgery is a good option, since they are typically progressive and spontaneous regression is almost never seen.
Objective: To compare the frequency, pattern and treatment modalities of mandibular fracture. Methods: Study January 2012 to December 2016. Total 88 patients (61 males and 27 females) with mandible fracture. Result: Of the 88 patients road traffic accident was the common most cause. Age of the patients ranged from 1–70 years with 32 patients in their second decade, condyle was commonest (23 patients) followed by parasymphysis in 21 patients. Open reduction was done in 49 patients and observations in 3 patients. Conclusion: The common most cause of mandibular trauma is road traffic accident with condyle being the most common. With advances in bone plating and technique the paradigm is shifting towards the open reduction. http://dx.doi.org/10.1016/j.ijom.2017.02.813 Quantitative assessment of the effect of manipulation on stock miniplates applied to simple angle fractures — a laboratory study R.K. Bagadia ∗ , J. Naveenkumar, C. Ravindran Faculty of Dental Sciences, Sri Ramachandra University, Chennai, Tamil Nadu, India Background: Angle fractures, with an average incidence of about 30%, are the most frequent among all mandibular fractures. Intraoral fixation of the fractured angle became a predictable technique after the proposal of Champys lines of osteosynthesis in 1978. But the technique requires adaptation of a miniplate to the ascending ramus. The unique architecture of this region requires artistic bending of the plate into a curvilinear as well as twisted implant which is not often possible without multiple attempts and a probable compromise on the catalogue strength. Objectives: 1. To quantitatively assess the effect of manipulation on stock miniplates applied to simple angle fractures. 2. To compare these effects against unaltered (U) and pre-bent (P) plates. Methods: Three versions of a four-holed straight miniplate with gap (2 mm diameter) namely the U, the manually bent (M) and the P were compared. These plates were subjected to linear and torsional forces using an Instron 3365 servohydraulic mechanical testing unit. Findings: Our investigation showed statistical differences in three parameters: yield load (U, 686.99 N; P, 684.83 N; M, 672.54 N),
http://dx.doi.org/10.1016/j.ijom.2017.02.815 Le Fort I approach for excision of odontogenic lesions near posterior maxillary sinus wall cases series Y.C. Chen ∗ , K.J. Chen, H. Surianti, Y.F. Wu, Michael Y.C. Chen Department of Oral and Maxillofacial Surgery, China Medical University Hospital, Taichung, Chinese Taipei Enucleation alone and marsupialisation (Partsch operation) followed by enucleation have been the most common modalities for complete eradication of jaw bone cysts. However, it is sometimes difficult to do so when the location of the lesion cannot be easily accessed. Although Le Fort I osteotomy is a well-known procedure for correction of dentofacial deformities, it has also been applied in