ISSN : 0376-4672
Maxillary sinus squamous cell carcinoma is a relatively rare disease, comprising only 3% of malignant diseases of head and neck. As the growth rate is high and its prognosis is poor compared to others, the 5-year survival rate of maxillary sinus squamous cell carcinoma(MSSCC) is 23.4-49%. We introduce two rare clinical cases of squamous cell carcinoma originated from maxillary sinus of which symptoms include toothache and gingival swelling. On clinical examinations of both patients, deep periodontal pockets on upper right posterior teeth were detected. On panoramic images, the bony destruction of the maxillary sinus and its surrounding structures were not obvious and only alveolar bone loss was noted. It is difficult to diagnose MSSCC at an early stage due to symptoms of tooth pain and gingival swelling that are similar to that of periodontal diseases. However, if the symptoms do not improve after routine treatment of upper teeth, dentists should bear in mind of underlying malignant mass as differential diagnosis, thus early detection of the lethal disease. The aim of this study is to caution dental practitioners that malignancies have a potential to mimic periodontal diseases by introducing two cases of maxillary sinus squamous cell carcinoma presented as periodontitis.
Recently, education is regarded as a service item and university education services are being exported abroad. In the form of educational export operations, export of educational contents and curriculum, specific consultancy projects for foreign institutes, installation of local educational facilities, or attracting foreign students are being carried out. Korea has the potential and competitiveness to export dental education. The advantages of Korea's dental education services, such as dental equipment and materials, excellent education programs, and high-quality human resources, will enable the export of education services in various ways. Establishment of educational infrastructure and educational programs for overseas dental students, export of educational consulting items, clinical training programs for foreign dentists abroad, invitation for international clinical workshops, dispatch of faculty members, exchange student programs can be considered as exporting dental education service items. Therefore, in a longterm perspective, it is necessary to establish differential and appropriate educational export plans.
The traditional orthognathic surgery treatment consists of three steps: preoperative orthodontic treatment, orthognathic surgery, and postoperative orthodontic treatment, and the average treatment period is usually two years. Also, patients with Class III malocclusion should spend more time getting their facial features worse during the decompensation process. However, most of the patients who want orthognathic surgery visit the chief complaints of appearance improvement, and resolve this address as soon as possible. The concept of °ÆSurgery - First 'does not cause a facial imbalance caused by decompensation for the pre - operative correction period, and the patient can obtain an improved facial profile immediately after the operation. In addition, the correction period is shortened by Regional Acceleratory Phenomenon (RAP) after surgery. However, it is not applicable to all patients. Patients with severe crowding, severe curve of spee or reverse curve of spee, severe transverse discrepancy of the maxilla and mandibular arch, and severe incisal angles are less likely to apply the technique. Although it is not yet possible to apply this technique to all patients, it has many advantages over the conventional method. Especially, the patients' preference is increasing due to the rapid appearance improvement and the shortening of the total treatment period.
Cosmetic use of botulinum toxin in the maxillofacial area has increased. Lower facial contouring is mostly performed procedure. Treatment of dynamic lines of the forehead, glabella, lateral orbit is also popular. Specific injection sites and clinical guidelines are presented.
