상악 전치부 임풀란트 보철치료 - 성장기 아동에서의 치료 시기와 문제점 -

권긍록,이백수 대한치과이식임플란트학회 1999 The Korean Academy of Implant Dentistry Vol.18 No.1

The purpose of this case report was to find out if implant-supported prosthesis in the upper incisor region run the risk of coming into an infraoccluded position later in life. An adolescent with one implant-supported central incisor was used. The age of the patient at the implant surgery was 15 years, and was followed up during 43-th period. An unacceptable esthetic appearance, infraocclusion(는 1mm) of the implant supported crown, at the last observation was found in this case. Throughout the follow-up period, minor loss of marginal bone ( = 1mm) spport was observed at the implant. At the teeth adjacent to the implant, a change of the marginal bone level was observed(士 0.5mm). Of importance to consider in single implant therapy is that a fixed chronologic age is no guidance for implant ac -ement, due to slight continuous eruption of the adjacent teeth post adolescence. Consequently, the sseointegration technique using dental implant is to be recommended carefully in the upper incisor region in adolescence as well as adult patient.

총의치의 교합조정

권긍록 대한치과의사협회 2005 대한치과의사협회지 Vol.43 No.6

악관절 내장증 중 관절원판의 후방전위에 관한 치험예

권긍록,우이형,최부병 경희대학교 1989 慶熙醫學 Vol.5 No.1

인공구치 형태 차이에 따른 저작효율과 근전도에 관한 실험적 연구(Ⅰ)

권긍록,이성복,우이형,최대균,최부병,박남수 경희대학교 1994 慶熙醫學 Vol.10 No.2

임플란트 보철치료

권긍록,최대균 경희대학교 2000 慶熙醫學 Vol.16 No.2

인공구치 형태 차이에 따른 저작효율과 근전도에 관한 실험적 연구(Ⅱ) : 30도 인공치와 설측교두 교합 인공치의 비교 Comparision 30-degree teeth with Lingualized teeth

권긍록,최대균,이성복,우이형,최부병,박남수 경희대학교 1995 慶熙醫學 Vol.11 No.3-4

정상 한국인의 하악 전방운동시 시상과로각과 절치로각에 관한 연구

권긍록,우이형,최대균,Kwon, Kung-Rock,Woo, Yi-Hyung,Choi, Dae-Gyun 대한치과보철학회 1989 대한치과보철학회지 Vol.27 No.2

Mandibular movements are guided mainly by three determinants, namely the two posterior controls (the Temporomandibular joints) and the anterior control (the incisal guidance). The aim of this study was to evaluate the incisal guide angle in effort to reconcile a patient's condylar guide angle and incisu guide angle, to develop criteria for incisal guidance in clinical practice. 48 subjects (male 33, female 15) with intact intercuspation, without past history and symptoms of stomatognathic system, were selected for this study. All of the subjects had not anterior prostheses. The sagittal condylar guide angles and incisal guide angles were measured and estimated statistically by cephalogram and articulator (Whip-Mix 8500A). The results of this study were as follows: 1. Average of condylar guide angle was 43.33 degree by cephalogram, and was 35.18 degree by articulator. 95% confidence interval was from 40.43 to 46.23 degrees in cephalogram and was from 32.98 to 37.38 degrees in articulator. 2. Average of incisal guide angle was 51.51 degree by cephalogram, and was 44.11 degree by articulator. 95% confidence interval was from 49.12 to 54.95 degrees in cephalogram and was from 40.67 to 47.56 douses in articulator. 3. Difference between condylar and incisal guide angle was 8.18 degree by cephalogram, and was 8.94 degree by articulator. 95% confidence interval was from 4.61 to 11.74 degrees in cephalogram and was from 4.90 to 12.98 degrees in articulator. 4. In case of the incisal guide angle steeper than condylar guide angle, subjects were 69% (33 of 48) in cephatogram and 75% (36 of 48) in articulator. 5. By the multiple regression equation, condylar guide angle was more influenced by the anterior teeth. 6. When the mandible protrudes from the intercuspal position to the edge to edge position the incisal linear movement was 4.18mm (S.D.:1.30mm) and the condylar linear movement was 4.38mm (S.D.:1.26mm).

Evaluation of bone quality in alveolar crest obscured by dental implants ; A pilot study by densitometric digital analysis in mandibular bone specimen

권긍록,Kwon, Kung-Rock The Korean Academy of Prosthodonitics 1998 대한치과보철학회지 Vol.36 No.6

임플란트 치과 임상에서, 협, 설측의 골조직 상태는 임플란트 재료의 높은 밀도 때문에 구내용 방사선사진으로는 파악할 수 없으나, 디지털 분석을 이용한 정량적 방사선 분석법을 사용하여 이 부위를 파악하고자 하였다. 건조 하악골에 10개의 직경 3.3mm인 solid screw형태의 $ITI^{(R)}$ 임플란트(Institute Straumann, Waldenberg, Switzerland)을 매식한 다음, 이들을 10개의 골 시편으로 절단한 후, 방사선사진 촬영을 시행했다. 일련의 중첩상을 얻기 위해, 특별히 고안된 방사선필름 고정기와 D속도 필름($Ultra-speed^{(R)}$, Kodak, USA)을 사용했으며, 고 해상도의 디지털 분석을 위해, 비디오카메라($Kodak-Eikonix^{TM}$, USA)로 필름을 scan하고 software(LaboImage, Computing Science Center, Geneva University)를 이용해 정량적 분석을 시행했다. 방사선 촬영은 4 방향(통상적인 periapical projection에 의한 근, 원심(MD)방향 및 협, 설(BL) 조사위, 통상적인 occlusal projection에 준한 25도 경사진 근, 원심(OMD) 및 25도 경사진 협, 설(OBL)조사위)으로 시행했으며, 각 시편에서 4장의 연속 중첩 방사선사진(superimposable radiograph)을 임플란트 매식공 천공 후, 임플란트 매식 후, 임플란트 주변(협,설) 골 손상 후, 임플란트 제거 후의 상황에서 표준화된 방법으로 촬영해서 얻었다. 기술적인 어려움에도 불구하고, occlusal projection으로 촬영하고, 이를 디지털 농도 분석한 방법에서. 치과 임플란트 주변 협, 설측의 미세골 변화를 파악할 수 있을 것으로 보였다. 특히, occlusal projection이 periapical projection에 비해 더욱 민감한 골 변화를 인지하는 것으로 나타났다. 비록 이 실험의 결과가 제한된 조건에서 얻어졌지만, 실제 임플란트 임상에서 임상가들에게 진단적 차원에서의 새로운 가능성과 다양성을 제시해 줄 수 있으리라 사료된다. Despite of technical difficulties, the combination of occlusal projection and densitometric digital analysis may ultimately provide a means of detection of subtle bone loss at the facial and lingual side of dental implant (Oblique occlusal view is more useful for $ITI^{(R)}$ dental implant due to its contour of shoulder as like tulip flower). In this study, conventional periapical projections of x-ray beam had shown more high sensitivity to detect the bony defects than oblique occlusal projections in alveolar crest obscured by dental implants or not, even if the difference was not statistically significant. Unlike conventional periapical projections. occusal projections combined with densitometric digital analysis technique may provide a means for detection of subtle bone change at the all around of implants without obscuring effect by implant itself. Although the results from this in vitro study were performed under limited circumstances, these results might afford more possibility and versatile modality of diagnosis options to clinician in the implant practice.

총의치의 교합면 형태에 따른 저작 효율 및 기능에 관한 연구

권긍록,최대균,Kwon, Kung-Rock,Choi, Dae-Gyun 대한치과보철학회 1998 대한치과보철학회지 Vol.36 No.2

This investigation was designed to determine the effectiveness of the posterior occlusal schemes on masticatory activity during mastication in complete denture. Twelve edentulous subjects were selected for this study. All subjects had no past history and no functional abnormality on masticatory system and TMjoint. And, they had residual ridge of favorable morphology, firm mucosa and Class I skeletal jaw relationship, Twelve experimental denture with interchangeable occlusions(0-degree teeth, 30-degree teeth, Levin teeth and S-A teeth) were constructed for this study. The masticatory performance was analyzed by means of standard sieve(10, 16, 20, 30sieve), and the electrical activity from selected muscles(Temporalis and Masseter muscle) was recorded simultaneously with electromyography (Bio-Pak system) as the subject masticated test foods (rice, peanut and gum) with four different occlusal schemes. Mandibular movement was, also, measured with Sirognathography(Bio-Pak system). These recordings were performed in immediately, after 1 week and after 2 weeks of insertion of complete denture. The results were as fellows; 1. The average masticatory performance of 0-degree artificial teeth was higher than any other artificial teeth. 2. Masticatory performance in denture wearer was affected preferentially by food and artificial occlusal schemes. 3. During chewing, there was a statistical difference of EMG activity between masseter and temporal muscle(p<0.01). Especially, EMG activity of working masticatory muscle was highly affected by food rather than by artificial occlusal schemes. 4. In denture wearer, the velocity of opening was not affected by food, whereas, the velocity of closing was faster in soft food chewing than in hard food chewing, and the amount of vertical displacement was grater in chewing of soft and large bolus than in chewing of hard and small bolus. However, the amount of lateral displacement showed conversely(p<0.05). 5. It was considered that masticatory performance in denture wearer is not affected by the condition of residual ridge. the history of denture wear, the preference, the adaptation to artificial teeth and the total mesiodistal length of artificial posterior teeth.

전치부 임프란트 보철수복: 심미와 기능의 조화

권긍록 대한치과이식임플란트학회 2002 The Korean Academy of Implant Dentistry Vol.21 No.1