• Imaging Science in Dentistry
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• v.39 no.4
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• pp.191-194
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• 2009

Purpose : The purpose of this study was to determine the prevalence of sinus opacification among adult dental patients. Materials and Methods : Five hundred and sixty-four Cone Beam Computed Tomography (CBCT) scans of dental patients over the age of 18 were reviewed for sinus opacification. Opacification was graded as clear, mild, moderate or severe. Patients with any sinus-related signs or symptoms were excluded. Results : Sinus opacification in one or more sinuses was found in 59.2% of the patients. The sinus opacification was mild in 49.8%, moderate in 8.3%, and severe in 1.1%. The maxillary (37.7%) and ethmoid (37.4%) sinuses were most frequently affected. The prevalence was higher in the older age group and showed a male predomination (p<0.05). Conclusion : Sinus opacification in asymptomatic adults is very common and emphasizes the importance of clinical correlation before deciding on the final diagnosis and treatment.

• Archives of Plastic Surgery
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• v.34 no.6
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• pp.735-740
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• 2007

Purpose: Blowout fracture is an outward fracture of the orbital wall. That usually occurs at inferior or medial wall of the orbit. The main pathophysiology is high intraocular pressure derived from impact of trauma. Among the four orbital wall, the medial wall is thinnest and most vulnerable to trauma. Many kinds of methods were introduced for correction of medial orbital wall fracture. Recently, transnasal endoscopic reconstruction methods were widely used. Endoscopic methods had many advantages. However, we experienced some cases of postoperative maxillary sinusitis. This study was planned to find out the effectiveness of middle meatal antrostomy after endoscopic reconstruction of medial orbital wall fracture. Methods: This study was retrospective analysis of 28 patients who underwent transnasal endoscopic repair of medial orbital wall fracture. The 18 male and 10 female patients were ranged from 17 to 57 years of age(mean, 30.9 years). Among 28 patients, randomly selected 17 patients underwent middle meatal antrostomy as additional procedure by the same surgeon. After at least 12 months of follow-up period, we examined the nasal symptom, endoscopic and CT findings. Results: One patient complained of nasal obstruction in middle meatal antrostomy group and four patients complained nasal symptoms in non middle meatal antrostomy group. On the endoscopic findings, three patients of non middle meatal antrostomy group had continuous nasal discharge. But middle meatal antrostomy group had no abnormal endoscopic findings. The abnormal CT finding(abnormal mucosal hypertrophy) were detected in four patient of non middle meatal antrostomy group. There were no abnormal CT findings in middle meatal antrostomy group. The data were statistically significant at comparative study. Conclusion: Authors think that the middle meatal antrostomy has some advantages as a additional procedure of endoscopic reconstruction of medial orbital wall fracture. Especially, it is good at preventing postoperative maxillary sinusitis. But, more larger group and strict application of disease entity are need for correct evaluation of middle meatal antrostomy effect.

• The Journal of the Korean dental association
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• v.54 no.1
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• pp.49-56
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• 2016

An oro-antral fistula(OAF) is one of the most common complications after procedures at the maxillary posterior area. The purpose of this study was to introduce the closure of OAF with repair of the Schneiderian membrane. This case report includes three patients with OAF arising after dental surgery on molar region of maxilla. Under general anesthesia, fistulectomy was achieved in all three patients and the full thickness flap around OAF was raised. After removal of inflammatory tissue, the Schneiderian membrane was repaired with suture or application of fibrin sealant. Additional closures were then performed with a buccal fat pad flap and a buccal mucoperiosteal flap. All OAF in three patients enrolled in this study were closed successively without recurrence of fistula. Treatment of oroantral fistula using repair of the Schneiderian membrane is a good alternative option for patients with OAF accompanied by chronic maxillary sinusitis.

• The Journal of Korean Academy of Prosthodontics
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• v.50 no.4
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• pp.330-335
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• 2012

Shortened dental arch (SDA) as a treatment goal is the concept that stable occlusion and enough masticatory force can be achieved by restoration to the second premolars when the situation is not favorable. SDA could be applied both natural teeth and implant supported fixed prostheses. This case dealt with a patient who has grade 2 intellectual disability and a lot of missing teeth. Because of intellectual disability, patient cooperation during treatment could not be expected. Therefore every treatment should be done under general anesthesia. In addition to that, ridge resorption around molar area was severe and there were maxillary sinus pneumatization and maxillary sinusitis which increased failure probability. SDA concept was adopted to reduce risk factor and minimize general anesthesia. After the treatment, functional and esthetic improvement was achieved and oral hygiene was fortified by periodic recall check and education.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.30 no.3
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• pp.249-257
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• 2008

The authors performed the clinical and radiographic evaluation in the 29 patients with sinus bone graft and $Osstem^{(R)}$ implant placement between Sep 2003 and Jan 2006 and got the following results. 1. Fifteen complications developed in the 13 patients. Intraoperative sinus membrane perforation and postoperative maxillary sinusitis developed frequently. 2. The mean preoperative residual alveolar bone height was 4.5 mm, postoperative height 18.5 mm, height 1 year after operation 16.9 mm. 3. Three primary osseointegration failures(3.7%) developed in 3 patients. 4. The survival rate of prosthodontics was 100% at the final follow up. The mean marginal bone resorption around the implants was 0.69 mm 1 year after prosthodontic loading. Marginal bone resorption more than 1.5 mm developed in nine implants and the success rate was 88%.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1987.05a
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• pp.12.2-12
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• 1987

만성 상악동염은 동점막의 복잡한 변화를 일으키고, 만성증으로 지속되는 비분비물 및 비점막의 염증이 이관에 파급되어 중이에 영향을 미치며 그 치유경과를 늦추게 한다. 저자는 만성 상악동염에서 동점막의 비후정도가 이관 및 중이에 미치는 영향을 알아 보고자, 1986년 1월부터 3월까지 이화여자대학교 의과대학 부속병원 이비인후과에 비폐색 및 비루를 주소로하여 내원한 환자중 만성 상악동염으로 진단된 16세 이상의 성인 환자를 대상으로 검사하였다. 동점막 비후정도에 따라 비정상군을 경도(2~3mm), 중등도(4mm이상), 고도(상악동 전체혼탁) 3군으로나누어 각각 40예를 조사군으로 하고 동점막의 두께가 0~1mm인 경우를 정상대조군으로 하여 40예를 GSI 28 AUTO TYMP를 사용하여 screening audiometry, tympanometry, acoustic reflex threshold (ipsilateral and contralateral)를 시행하여 다음과 같은 결과를 얻었다. 1) 남녀의 비는 1 : 2.6이고 21세에서 30세군이 53예(33.0%)로 가장 많았다. 2) 증상발현기간은 6개월 이내가 42.5%로 가장 많았다. 3) Tympanogram의 분포에서 비정상적 type으로 나오는 비율이 정상군과 비정상군중에서 경도군이 각각 22.5%이었고 중등도군이 30.0%, 고도군이 50.0% 순이었다. 4) 등골근반사역치는 정상군과 비정상군 사이에 차이가 없었다. 5) 등골근무반사율 역시 정상군과 비정상군 사이에 차이가 없었다.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.7 no.2
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• pp.119-122
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• 2011

Achondroplasia is one of the most common types of dwarfism and is inherited as an autosomal dominant trait. Clinical features of achondroplasia include disproportionate short stature with normal trunk length, shortening of the extremities, bowing of the lower extremities, short stubby trident hands, spinal stenosis and lumbar lordosis. Characteristic craniofacial features include macrocephaly, prominent forehead, depressed nasal bridge, maxillary hypoplasia, otolaryngeal system dysfunction, and foramen magnum stenosis. These characteristics may lead to number of complications including hydrocephalus, apnea, upper-airway obstruction, otitis media, sinusitis and dental malocclusion. Apart from these features, the affected children have good general health and normal intelligence. Dentists should be aware of the clinical characteristics of achondroplasia and the complications that may arise as a result of this disorder. This case report is to present dental treatment of a patient with achondroplasia under general anesthesia and discuss special considerations.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.18 no.1
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• pp.33-39
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• 1996

Human Dura mater treated by various processes was used to restore small periodontal defects, large bony defects for improvement of new bone formation, and soft tissue defects and replace the disc of TMJ, etc.. Tutoplast Dura is the solvent-preserved Human Dura mater and sterilized by gamma radiation. In our department, Tutoplast Dura was implanted in 32 patients, from 1994, 6 to 1995, 7. We implanted the Tutoplast Dura at 11 various cysts, 6 implantations, 4 fractures, 3 clefts, 2 TMJ disease, 2 maxillary sinusitis, etc.. We performed the retrospective study about the purpose of Tutoplast Dura implantation, postoperative complication and histologic examination of biopsy specimen at implant second surgery.

• Imaging Science in Dentistry
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• v.48 no.1
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• pp.59-65
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• 2018

Osseointegrated implants are now commonplace in contemporary dentistry. However, a number of complications can occur around dental implants, including peri-implantitis, maxillary sinusitis, osteomyelitis, and neoplasms. There have been several reports of a malignant neoplasm occurring adjacent to a dental implant. In this report, we describe 2 such cases. One case was that of a 75-year-old man with no previous history of malignant disease who developed a solitary plasmacytoma around a dental implant in the left posterior mandible, and the other was that of a 43-year-old man who was diagnosed with squamous cell carcinoma adjacent to a dental implant in the right posterior mandible. Our experiences with these 2 cases suggest the possibility of a relationship between implant treatment and an inflammatory cofactor that might increase the risk of development of a malignant neoplasm.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.8
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• pp.1955-1961
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• 2013

Paranasal sinuses of the empty space is filled with air that exists in the bones in the face. However, the pus becomes inflamed paranasal sinuses sinusitis onset brings the voice of change, and complained of headaches and lethargy. Therefore, in this paper, paranasal sinuses related diseases to predict voice analysis parameter as measured by changes in paranasal sinuses through external stimuli is investigated and carried out a study to analysis the function consisting of the frontal sinus, ethmoid sinus, maxillary sinus, sphenoid sinus. From this, cold pack stimulation in the paranasal sinus area for stimulation before and after voice was performed by measuring formant frequency and external stimuli through correlation analysis of the mutual impact on paranasal sinuses were analyzed.