• Maxillofacial Plastic and Reconstructive Surgery
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• 제34권1호
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• pp.26-33
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• 2012

Purpose: The golden ratio has been used for a long time to objectify and quantify 'beauty'. Dr. Marqurardt claims that the golden ratio can be applied in the maxillofacial field as well. The purpose of this study was to evaluate the diagnostic significance of using a facial 'phi' mask for analyzing Korean faces with characteristics of Class I, II, and III malocclusion. Methods: We studied twenty five Korean celebrities' frontal facial photos (10 males, 15 females) and 90 malocclusion patients' frontal facial photos (30 patients in each malocclusion classification: Class I, Class II, and Class III). Patients who received orthodontic treatment at Samsung Medical Center were selected for this study. After superimposition of the selected facial photo and facial 'phi' mask using Adobe Photoshop CS3, the ratio of the entire facial area, mid facial area, lower facial area and horizontal and vertical lengths were measured. Results: The facial ratio in photos of Korean faces showed larger vertical and horizontal ratios than the facial 'phi' mask with golden ratio, regardless of skeletal malocclusion (entire face: 115%, lower face: 125% larger than the mask). The results of the frontal photos of Class I, II, and III malocclusion patients using facial 'phi' mask showed that the vertical length and frontal face area was more significantly influenced by the area of the lower face than the midface. This means that the lower face has larger proportions in the facial areas. Conclusion: The ratio of facial 'phi' mask is matched with the ideal facial appearance that the contemporary Korean general public is seeking. Thus, the facial 'phi' mask may be a convenient tool for esthetic analysis of Korean faces. Reducing the area of the lower face is esthetically more desirable for almost all Korean people when planning orthognathic surgery.

• 대한소아치과학회지
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• 제42권1호
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• pp.45-52
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• 2015

본 연구의 목적은 3급 부정교합 환자에서 facemask를 이용한 악정형치료 시, 고정원으로 사용하기 위해 장착되는 구내 장치의 종류에 따른 효과를 비교하는 것이다. 3급 부정교합 환자 18명을 대상으로 악정형치료를 평균 12개월 동안 시행하였으며, 이 중 9명은 구내 장치로 bonded expander를, 9명은 Hyrax를 사용하였다. 치료 시작 전, 그리고 치료 직후에 측면 두부방사선사진을 촬영하여 비교 분석하였다. 또한 고정원 소실 정도를 조사하고, 장치에 따른 차이를 비교하였다. 악정형치료 효과에서는 두 군 모두 뚜렷한 개선을 보였고, 군간의 유의한 차이는 없었다. 각 구내 장치 모두 어느 정도의 고정원 소실량은 존재하였지만 군간의 차이는 없었다. Facemask는 성장기 3급 부정교합 환자의 치료에 있어서 효과적인 치료 방법이며, 구내 장치로 사용된 bonded expander와 Hyrax 간에 유의한 차이는 없었다.

• 한국치위생학회지
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• 제10권4호
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• pp.655-661
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• 2010

Objectives : This study is aimed to prevent the damage to the inferior alveolar nerve during the orthognathic surgery. Methods : The control group consist of 50 patients with class I occlusion. The experimental group consist of 50 patients with class III malocclusion. The cepalometric radiography was used to evaluate the position of the mental foramina. Results : In the first, mental foramen position of class III was more inferior 0.85 mm in the distance between base of mandible and mental foramen. But the distance between occlusal plan and mental foramen had not statistically significant. Secondly, mental foramen location of Mandibular Prognathism was more anterior 0.91 mm in the distance between coronal plane of mandible included pogonion point and mental foramen. Also, the distance of occlusal-coronal plane of mandible included central incisor and mental foramen had statistically significant. The mental foramen location of class III was more anterior 4.81 mm than class I patients. Conclusions : The result of this study could help the clinicians to apprehend fundamental data with various facial skeletal types for any related researches about the location of the mental foramina for other purposes.

• 대한치과교정학회지
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• 제52권5호
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• pp.362-371
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• 2022

Orthognathic surgery is the primary treatment option for severe skeletal discrepancy. However, orthodontic camouflage should be considered as an alternative treatment option, considering the risks of surgery. A 19.5-yearold man presented with a severe prognathic mandible with a Class III molar relationship and an anterior crossbite. Orthognathic surgery could be considered because of his severe skeletal discrepancy and mandibular prognathism. However, the anesthetist for orthognathic surgery did not recommend surgery under general anesthesia because of risk factors associated with the patient's aplastic anemia, including bleeding and infections. Thus, a camouflage treatment to promote backward rotation of the mandible via orthodontic extrusion of the posterior teeth was planned. An anterior bite plate, intermaxillary elastics, and fixed orthodontic appliances were used to extrude the posterior teeth and to align the dentition. After 17 months of nonsurgical orthodontic treatment, normal occlusion was achieved, and the facial profile was dramatically improved. This case report describes the dentoskeletal and soft-tissue effects of mandibular rotation and its long-term stability.

• 대한치과의사협회지
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• 제20권5호통권156호
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• pp.457-460
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• 1982

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제31권5호
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• pp.422-426
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• 2005

Purpose : The purpose of this study was to investigate the vertical stability after BSSRO surgery in skeletal class III malocclusion patients with mild anterior open bite and to present a method to increase the stability. Materials and methods : 36 patients, 11 male and 25 female, who received BSSRO surgery with the diagnosis of skeletal class III with anterior open bite at the Department of Oral and Maxillofacial Surgery in Samsung Medical Center, from January 2002 to August 2003, were selected for this study. The patients were between 18 to 45 years of age. Preoperative and postoperative (immediate, 6 months, and 1 year after operation) lateral cephalograms were compared to evaluate the vertical stability by measuring the distance of nasion-menton, mandibular plane angle, and overbite. Results : The nasion-menton distance decreased by 1.65mm immediately after the operation in comparison to the preoperative value. This distance further decreased by 0.60 mm at 6 months and 1.06mm at 1 year after the operation. The mandibular plane angle increased after the operation and further increased at 6 months and 1 year. The amount of overbite increased by the operation was 2.34mm and an additional increase of 0.70mm at 6 months and 0.94mm at 1 year were shown. Conclusion : Clinically, none of the patients showed relapse of anterior open bite and the vertical stability is highly influenced by orthodontic treatment after the operation. In this study, BSSRO surgery is considered to be a rather reliable procedure that restores stability to skeletal class III malocclusion patients with slight anterior open bite.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제28권1호
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• pp.24-30
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• 2002

The facial patterns were expressed by the interrelation of variable factors such as heredity, function and environment. Such variable factors have an effect on the growth and development of maxillofacial bones. The malocclusions with skeletal discrepancies are caused by abnormal forms, sizes and positions of cranial base, maxilla and mandible. For the proper diagnosis and treatment planning, the analysis of such structures is necessary. Lateral cephalograms of 54 adults with class III malocclusion patients (test group) and 61 adults with normal occlusion (control group) were analyzed. Anteroposterior relations and sizes of cranial base, maxilla, mandible were estimated to compare with those of normal ones. In test group, the anterior cranial base length was within normal range, but posterior cranial base, maxilla and mandibular body were longer than those in control group, significantly. Based on the cranial base, the location of maxilla in test group was normal, but the location of mandible was more anterior than that in control. Based on the maxilla, the location of mandible was more anterior in test group than that in control. Both mandibular body and ramus anteroposterior lengths in test group were larger than those in control. Both mandibular plane angle and upper gonial angle were within normal range, but lower gonial angle was significantly high in test group.

• 대한치과교정학회지
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• 제27권2호
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• pp.197-208
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• 1997

제 III급 부정교합 환자의 치료를 위해서는 각 환자의 문제점들과 상태를 다양한 진단방법들을 동원하여 분석한 후에 가장 적절한 치료방법을 선택하여야 한다. 초진시에 치성 또는 기능성 또는 골격성인 원인들의 감별이 분명한 증례에서는 치료계획 수립이 큰 문제가 없지만, 감별이 모호한 증례에서는 많은 어려움을 경험하게 된다. 이에 저자는 각 치료방법을 적용하여 치료한 제III급 부정교합 환자 482명 (남;253,여 ;229)을 대상으로 치료방법에 따라 네 군으로 분류하였다. D군은 가철성 교정장치나 악기능장치를 사용하여 치료한 115명(남;64, 여;51), A군은 악정형장치로 치료한 210명 (남;111, 여 ;99), B군은 고정식 교정장치로 Camouflage 하여 치료한 63명 (남;30, 여 ;33), C군은 악교정 수술로 치료한 94명(남;48, 여;46)이었다. 초진시에 촬영한 측모두부방사선사진에서 전후방, 수직적, 치성, 악골의 형태학적인 계측항목들을 선정하여 각 군에서 측정한 계측치의 평균값 및 표준편차를 구하였고 네 군간의 유의성 여부를 검정하여 아래와 같은 결과를 얻었다. 1. SNA각과 Nasion Perpendicular Plane에서 A점까지의 거리는 네 군간에 유의한 차이가 없었으며, SNB, Wits, Nasion Perpendicular Plane에서 B점까지의 거리, Facial angle, Facial convexity, APDI의 값은 C,A,B,D군의 순이었지만 A군과 B군간에는 유의한 차이가 없었다. 2. 전안면고경, 후안면고경, 하전안면고경의 값이 남자에서는 C,B,A,D의 순으로 유의성 있는 차이를 나타냈으며, 여자에서는 C와 B군간에는 유의한 차이가 없게 나타났다. 3. 남자에서 전두개저에 대한 하악체 길이의 비율, 하악체의 길이와 Symphysis의 길이는 C,B,A,D순으로 나타났으나 B군과 A군사이에는 유의한 차이가 없었고, 여자에서는 Ramus height, 하악체 길이, 전두개저에 대한 하악체 길이의 비율이 네군에서 유의한 차이를 나타냈고 Symphysis의 길이는 C군과 B군 사이에서는 유의한 차이가 없었다. 4. 상악전치 치축은 C,B,A,D순으로 크게 나타났으며 네 군간에서 유의한 차이가 나타났다. 5. Nasolabial angle의 값은 C,A,B,D순으로 작게 나타났으나 유의한 차이는 C와 A,B,D군 간에서만 나타났다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제29권1호
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• pp.91-96
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• 2007

법랑질 형성부전증은 전치부 개교합과 같은 골격적인 문제를 자주 동반하며, 이러한 경우 구강악안면외과, 보철과, 보존과, 교정과 의사들이 함께 치료하여야 한다. 본 증례는 법랑질의 약화와 치아 우식증 등의 이유로 일반적인 교정치료를 시행할 수 없어 보철적 방법으로 치료하였다. 보존적, 보철적 방법을 이용하여 술전 교정과 같은 안정된 교합을 형성하였다. 악교정 수술을 시행하고 SAS 등을 이용하여 악간고정을 시행하여 양호한 결과를 얻을 수 있었다.

• 대한소아치과학회지
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• 제10권1호
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• pp.7-12
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• 1983

The author used cephalometric roentgenogram to observe the longitudinal change by orthodontic treatment for early class III malocclusion in primary and mixed dentition. First, the cephalometric roentgenograms were measured and following results were obtained 1. SNA, SNB, ANB, Gonial angle, and SN to mandibular plane were measured as skeletal pattern and $\underline{1}$ to SN. $\overline{1}$ to mandibular plane and interincisal angle were measured as denture pattern. 2. Angular measurements for the Class III malocclusion were compared with those for the normal occlusion of the same Hellman dental age.