INTRODUCTION: Most patients with malignant neoplasm of maxillary sinus have no symptoms in the early stage and therefore, many of these patients are diagnosed in the advanced stage of the disease. The complexity of the anatomy and the proximity of the eyes, brain and cranial nerves render complete surgical resection difficult, which leads to local recurrence, a major cause of treatment failure. The incidence seems to vary in different parts of the world, with Asian countries reporting high numbers of cases. Malignant neoplasm of maxillary sinus is very difficult to treatment and traditionally has been associated with a poor prognosis. GOAL: To study the stage and treatment of the malignant neoplasm of maxillary sinus. MATERIALS AND METHODS: 130 patients who had been diagnosed with malignant neoplasm of maxillary sinus at National cancer center of Mongolia between 1 January 2003 and December 2013 were reviewed. The following data were collected: malignant neoplasm staging, types of treatment. Malignant neoplasm staging was done using the 7th edition of the American Joint Committee on Cancer (AJCC) classification, and retrospective restaging was done in previously diagnosed patients. RESULTS: There were 81 (62.4%) male and 49 (37.6%) female patients with a mean age of 53.18 years. Malignant neoplasms were classified retrospectively using the AJCC Staging System tumor classification was 5 (3.8%) were staged as II, 17 (13.1%) were staged as III, 108 (83%) were staged as IV, none stage as I. Malignant neoplasm of maxillary sinus to most infiltrated into nasal cavity (75 cases). In total, there 130 patients were submitted only to surgery 20.7%, to radiotherapy 22.3%, to chemotherapy 6.9%, to combination therapy 42.3%. CONCLUSIONS: 1.The higher the patient’s clinical stage was, the worse his prognosis was. 2. In this study the most commons treatment was combination of therapy. Combination of therapy may be the best treatment for patients with maxillary sinus malignant neoplasms.

Prevalence rate of congenital cleft lip and palate is different among countries, approximately 0.87-1.03 per 1000 live births. Several studies conducted in our country showed 1 per 1314 live births in 2005 ( Ariuntuul.G et al.), 1 per 1072 live births in 2012 (Ayanga et al.). According to the published review, children with cleft lip and palate are more prone to dental caries compared to the healthy group. The loss of oral physiological function such as eating, breathing, chewing eventually results loss of oral self-cleansing process in children with cleft lip and palate. Aim:To evaluate the oral status in children with cleft lip and palate. Our cross sectional study included 70 children with a congenital cleft lip and palate, aged 2-16 years, who admitted to the Department of Maxillofacial surgery, National Center of Maternal and Child Health. All participants had an oral examination performed by one dentist in a dental office, used only single-use instruments. Incidence of dental caries was determined by WHO method, bleeding from gum and gingivitis was reported along with the CPI, oral hygiene status was determined by the Green Vermillion index. 59% of participants were girls and 41% were boys. Prevalence rate of dental caries in children with cleft lip and palate was 100% during each occlusion period, but intensity of the dental caries was 10.2±4.8 cs/t (SN) in a primary bite, 9.1±3.9 in a mixed bite and 7.7±2.7 in a permanent bite period, respectively. Incidence of gingivitis was 100% in a primary bite period. Prevalence rate of dental caries was 100% among 2-16 year-old children with congenital cleft lip and palate. Dental caries intensity rate among children with congenital cleft lip and palate was significantly higher (6.5) compared to the WHO’ s dental caries intensity rate. Compared to healthy children, incidence of gingivitis was higher, and oral hygiene status was poorer in children with congenital cleft lip and palate, which could have increased the risk of periodontitis and dental caries among these children.

Prevalence rate of congenital cleft lip and palate is different among countries, approximately 0.87-1.03 per 1000 live births. Several studies conducted in our country showed 1 per 1314 live births in 2005 ( Ariuntuul.G et al.), 1 per 1072 live births in 2012 (Ayanga et al.). According to the published review, children with cleft lip and palate are more prone to dental caries compared to the healthy group. The loss of oral physiological function such as eating, breathing, chewing eventually results loss of oral self-cleansing process in children with cleft lip and palate. Aim:To evaluate the oral status in children with cleft lip and palate. Our cross sectional study included 70 children with a congenital cleft lip and palate, aged 2-16 years, who admitted to the Department of Maxillofacial surgery, National Center of Maternal and Child Health. All participants had an oral examination performed by one dentist in a dental office, used only single-use instruments. Incidence of dental caries was determined by WHO method, bleeding from gum and gingivitis was reported along with the CPI, oral hygiene status was determined by the Green Vermillion index. 59% of participants were girls and 41% were boys. Prevalence rate of dental caries in children with cleft lip and palate was 100% during each occlusion period, but intensity of the dental caries was 10.2±4.8 cs/t (SN) in a primary bite, 9.1±3.9 in a mixed bite and 7.7±2.7 in a permanent bite period, respectively. Incidence of gingivitis was 100% in a primary bite period. Prevalence rate of dental caries was 100% among 2-16 year-old children with congenital cleft lip and palate. Dental caries intensity rate among children with congenital cleft lip and palate was significantly higher (6.5) compared to the WHO’ s dental caries intensity rate. Compared to healthy children, incidence of gingivitis was higher, and oral hygiene status was poorer in children with congenital cleft lip and palate, which could have increased the risk of periodontitis and dental caries among these children.

Background: Class III malocclusion is considered to be one of the most difficult and complex orthodontic problems to treat. For patients whose orthodontic problems are so severe that neither growth modification nor camouflage offers solution, surgery to realign the jaws or reposition dentoalveolar segments is the only possible treatment option left. Objective: The treatment objectives were to: (1) level and align the dental arches; (2) obtain an ideal overbite and overjet, to establish correct anterior guidance; and (3) improve the facial profile. Results: Excellent facial and occlusal results were achieved with this surgical-orthodontic management, post-treatment results showed a Class I relationship and ideal overjet and overbite. The facial profile became straight type. Conclusions This case report describes the treatment of a female with dental and skeletal class III relationships. Surgical-orthodontic treatment was the best option for achieving an acceptable occlusion and a good esthetic result in this case. An experienced multidisciplinary team approach ensures a satisfactory outcome.