• Title/Summary/Keyword: Jaw relation

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JAW RELATION WITH PERMANENT RECORD BASES IN THE EDENTULOUS PATIENTS (총의치 환자에 있어 Permanent record base를 이용한 악간관계 기록)

  • Heo, Yun-Seok;Shin, Sang-Wan
    • The Journal of Korean Academy of Prosthodontics
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    • v.33 no.2
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    • pp.231-239
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    • 1995
  • When the complete denture is made, the record base for jaw relation is divided into temporary record base and permanent record base. However, The temporary record base include some disadvantages such as, the lackness of intimate contact between model and base, the lackness of retention during the jaw relation registration, When we obtained jaw relation the permanent record bases made from heat curing resin were utilized. We could get several advantages as follows : 1. The permanent record base provided intimate contact between the model and record base. 2. In fabricating occlusal rim on record base, the dimensional change of record base was little because the permanent record base was lesser influenced to thermal change of occlusal rim than the temporary record base. 3. At the stage of jaw relation, the retention of final denture could be early checked. 4. It could be able to get more accurate registration of jaw relation because all procedure were done on the same base during the jaw relation, artificial teeth arrangement, try-in, and final denture construction. 5. Although there was an inconvenience due to double curing procedure, the shrinkage rate in resin polimerization was relatively reduced so that more dimensional stability could be taken.

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A Study of Simple Hinge Articulator Mounting Method (단순접번 교합기의 모형부착 방법에 관한 연구)

  • Cho, Hong-Kyu
    • Journal of Technologic Dentistry
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    • v.25 no.1
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    • pp.95-102
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    • 2003
  • The purpose of this study was to show occlusion on the simple hinge articulator optionally mounted. Modelling of upper-lower jaw and simple hinge articulator were developed. This modelling of upper-lower jaw inserting wax bite was mounted imaginary on the modelling of simple hinge articulator by use of the computer simulation. From changes of THA(transverse horizontal axis)-incisor distance, Balkwill angle and THA deviation, eight types were mounted respectively. After removal of wax bite, upper-lower jaw position changing were compared with centric jaw relation. The results were as follows: 1. The change of THA-incisor distance had influence on mostly a vertical shift of upper jaw. 2. The change of Balkwill angle had influence on mostly a horizontal shift of upper jaw. 3. Inferior type in the THA deviations was the least shift of upper jaw. The above results suggest that the simple hinge articulator optionally mounted effect a shift of upper jaw.

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A STUDY ABOUT CLINICAL APPLICATION OF GROWTH CHANGES IN SAGITTAL JAW RELATION AND INCISOR POSITION (상하악 전돌상태와 상하악전치위치의 성장변화에 대한 임상적 응용에 관한 연구)

  • Kang, Goo Han;Kim, Il Bong
    • The korean journal of orthodontics
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    • v.12 no.1
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    • pp.27-30
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    • 1982
  • The growth changes in position of upper and lower jaws, incisal inclination in relation to inferior cranial base have been described. Twenty five males was studied quantitavely by means of serial cephalometric reontgenogram from seven to thirteen years of age. The findings seem to warrant the following conclusions: 1. Growth change in anteroposterior relationship of upper and lower jaws to the anterior cranial base showed very little change before eleven years of age but axial inclination of incisal teeth tended to become labiaization in relation to the anterior cranial base. 2. kiter eleven years of age, there wasn't nearly labialization of incisal teeth but jaw prognathism occurred a little in relation to the anterior cranial base.

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FABRICATION OF SURGICAL SPLINT BY USING OF SURGICAL JAW RELATOR (Surgical Jaw Relator를 이용한 Surgical splint의 제작)

  • Yang, Sang-Duck
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.27 no.2
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    • pp.188-195
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    • 2005
  • After making the surgical treatment plan, the surgical movements are duplicated in the model surgery. During this procedure, reference points and lines are drawn on the base of the models over the dental arch, and sawcuts are made according to these marked osteotomy lines. This method requires more accuracy for better postsurgical results in that the surgical splint which enables the surgeon to position the jaws intraoperatively is made from the casts as repositioned by the model surgery, and finally it will define the postsurgical results. This technique, however, has been found to be inexact, especially when the jaws are moved in several dimensions simultaneously. To overcome this, different methods have been developed for an accurate repositioning of the jaws as planned. A new appliance, Surgical Jaw Relator, was devised by the author for the simple 3-dimensional relocation of the upper and lower models, resulting in the easy construction of the splints such as centric relation splint, intermediate and final splint. This article describes an introduction and a clinical application of this appliance.

Full-mouth rehabilitation of severely attrited dentition with missing posterior teeth: a case report using digital workflow with jaw motion tracking (심한 교모와 구치부 상실을 보이는 환자의 전악 수복: Jaw motion tracking과 digital workflow를 활용한 증례 보고)

  • Chan Young Park;Younghoo Lee;Seoung-Jin Hong;Janghyun Paek;Kwantae Noh;Ahran Pae;Hyeong-Seob Kim;Kung-Rock Kwon
    • The Journal of Korean Academy of Prosthodontics
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    • v.61 no.4
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    • pp.293-307
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    • 2023
  • Jaw motion tracking, which is introduced in recent case reports, is a method which records the patient's individualized pathway of the mandibular movements along with facebow transfer, and reproduces the information in the virtual space of computer-aided-design/computer-aided-manufacturing (CAD-CAM) software. In this present case, a collapse of the occlusal plane was observed, due the loss of posterior teeth for a long period. Full-mouth rehabilitation with an increase in the occlusal vertical dimension was planned. First, the patient's mandibular movements were recorded on the newly established jaw relation by jaw tracking, and this information was assembled with the patient's intraoral data to create a virtual patient. Implant planning and diagnostic wax-up was done on the virtual patient, leading the fabrication of the provisional prosthesis. On the newly established jaw relation with an increase in the occlusal vertical dimension, canine guidance of the provisional prosthesis was checked. Finally, the provisional prosthesis was carried out to the definitive prosthesis. Using the advantages of the technologies in the digital dentistry, the patient was satisfied with the function and the esthetics after the treatment.

Two-jaw surgery by use of Surgical Jaw Relator (Surgical Jaw Relator를 이용한 양악 수술 치험례)

  • Yang, Sang-Duck
    • The korean journal of orthodontics
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    • v.35 no.3 s.110
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    • pp.238-249
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    • 2005
  • The contemporary two-jaw surgical approach usually involves a Le Fort osteotomy of the maxilla and a ramal osteotomy of the mandible with 3-dimensional repositioning of the jaws as well as the occlusal planes. After making the surgical treatment plan. the surgical movements are duplicated in the model surgery. During this procedure, reference poings and lines are drawn on the base of the models over the dental arch and sawcuts are mads according to these marked osteotomy lines. This technique, however, has been found to be inexact. especially when the laws are moved in several dimensions simultaneously. To overcome this. different methods have been developed for an accurate repositioning of the jaws as planned. A new appliance. Surgical Jaw Relater, has been devised by th8 author for the simple 3-dimensional relocation of the upper and lower models, resulting in the easy construction of the splints such as centric relation splint, intermediate and final splint. This article describes an introduction and a clinical application of this appliance. Through the application of this system to the orthognathic cases including two-law surgery. it is proved that the row device is very clinically useful.

Full mouth rehabilitation on the patient with class II jaw relation and posterior bite collapse using reestablishment of occlusal vertical dimension: a case report (구치부 교합지지가 상실된 II급 악간관계 환자의 교합 재설정을 통한 완전 구강회복 증례)

  • Kim, Jae-Hyun;Cho, Hye-Won;Jung, Ji-Hye
    • Journal of Dental Rehabilitation and Applied Science
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    • v.31 no.3
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    • pp.262-272
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    • 2015
  • Loss of molar support and abnormal jaw relationship lead to occlusal disharmony and cause pathologic signs. Full mouth rehabilitations with reestablishment of occlusal schemes are needed. In this case, the 75 year-old female patient showed posterior bite collapse, irregular occlusal plane and Class II jaw relationship. By observing her profile and interocclusal distance, she was diagnosed as loss of occlusal vertical dimension. Treatment plan is to restore maxillay class I removable partial denture and mandibular fixed prosthesis and to establish vertical dimension and harmonious occlusal plane. Occlusal vertical dimension of 19 mm, which is obtained by 7.5 mm increase between maxillary right lateral incisor and mandibular canine, was established using temporary prosthesis via diagnostic wax-up. Patient adaptation with newly formed vertical dimension was verified during 8 week follow-up period. Within the information of interim prostheses, final restoration was constructed and delivered. The patient showed sound occlusal scheme and esthetic profile.

Gothic arch tracing to record centric relation for dentures (Gothic arch tracing을 이용한 의치의 중심위 기록)

  • Shin, Soo-Yeon
    • Journal of Dental Rehabilitation and Applied Science
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    • v.30 no.3
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    • pp.238-245
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    • 2014
  • In order to create denture occlusion that is functional, comfortable and balanced, it is necessary to both determine a vertical dimension of occlusion that is in harmony with the patient's musculature and to record a relatively repeatable jaw relation position. This require clinical skill to establish an accurate, verifiable and reproducible vertical dimension of occlusion (VDO) and centric relation (CR). Correct vertical relation depends upon a consideration of several factors, including muscle tone, inter-dental arch space and parallelism of the ridges. Centric relation is considered to be a repeatable position from which all opening and lateral mandibular movements begin and recording this position is a critical step in the fabrication of dentures. Any errors made while taking maxillo-mandibular jaw relation records will result in denture that are uncomfortable. The purpose of this paper is to review a very simple and efficient technique for accomplishing these two important steps in denture fabrication.