Application of a bite plate is known as one of the treatment methods for temporomandibular arthrosis. However, prolonged attachment is sometimes necessitated. Moreover, patients with multiple tooth defects involving the anterior region may not always consent to the treatment for aesthetic reasons.
We achieved successful results by application of an aesthetically-remodelled bite plate in the treatment of temporomandibular arthrosis in patients with multiple defects of teeth including anterior teeth. This paper presents the treatment method.

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Occlusal morphology is considered to be consistent with mandibular movement and part of Nature's schematic way of organizing part that may coexist while carrying out their intended functional requirements. The plane of occlusion, the inclination and length of guiding planes and the horizontal and vertical overlap of teeth are fundamental factors which also must coexist and be organized with mandibular movement. The main points in this investigation were providing the functional parameters of occlusion in Japanese subjects. Laterotrusive guiding planes increased in steepness from the second molar to the canine. This provides a continuous disocclusion in laterotrusion until canine alone assumes this function as described by Slavicek. The position for the lower incisal edge was located at the end of the steep guiding plane (F3) or shortly posterior. Intercoronal angle, space between labial surface of the lower incisors and the lingual concavity of the upper incisors, is functional freedom which measured as approximately 47 degree in this study. Measurements in difference between inclination of guiding plane of the upper incisors and the functional parameter of the temporomandibular joint indicated that the incisal guidance (S) should be 9.8 degree steeper than the horizontal condylar inclination (HCI) . Occlusal plane constructed by the sequence of upper passive centrics inclined 10 to 11 degree to the axis-orbital reference plane (AOP) . From these findings, it was indicated that natural normal occlusion have a certain rules and basic forms described as sequential functional guidance occlusion by Slavicek.

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Advanced periodontal disease often compromises the tissues supporting the teeth, causing an increase in their mobility or migration. A-splint is an appliance for the immobilization or stabilization of diseased parts. The use of splinting in periodontal therapy is controversial. There is little evidence to support the much quoted rationale that the splinting of mobile teeth enhances resistance to further periodontal breakdown and improves the healing response. Splints shold be use only if it is necessary for obtaining occlusal stability or for replacing missing teeth, nor dose it predictably reduce mobility.
The two major indications for periodontal splinting are to immobilize excessively mobile teeth so that the patient can chew more comfortably, and to stabilize teeth in their new position after orthodontic treatment.
In this paper of advanced periodontal patient after orthodontic treatment on upper anterior teeth, we carried out the splinting in maxillary anterior tooth by use of multi-purpose tooth splinting material [Wing Rock] system (Daigen, Osaka) .
The [Wing Rock] system uses shape memory alloys which have many advantages a splinting use of resin-wire or prosthesis.
Consequently, we could accomplish the improvement of esthetics, tooth mobility, and appropriate mandibular movement on the maxillary anterior tooth.

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In clinical practice, we encounter many patients with various degrees of malalignment.
Malalignment causes impaired perfusion of saliva, inappropriate physical stimulation by the cheeks and tongue, food retention, or difficulty in oral cleansing, resulting in dental caries and periodontal diseases.
Depending on the degree of malalignment, problems arise in terms of mastication, talking, aesthetics, and function. In addition, shift in the intercuspal position and the centric position is observed in many patients, making the mandibular position unstable.
In the repair of malalignment in adult patients, active use of orthodontic treatment under appropriate conditions of the patient is useful for attaining a more stable intercuspal position and a stable mandibular position and also facilitates repair. A stable state can be maintained for long years.
However, since growth of the jaw bone has been completed in adults unlike children in the growth period, orthodontic treatment in adults involves only treatment of the teeth. In addition, translation requires time. Therefore, caution is necessary for the application of orthodontic treatment. Informed consent after adequate explanation should be obtained from the patient when surgical orthodontic treatment beyond treatment of the teeth alone is performed.
Since the application of orthodontic treatment to adults is difficult, guidance and management in the early stage of growth are important for appropriate function such as mastication and phonation.

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Golden proportions between facial vertical dimensions described by Ricketts^{4, 5)} and equations used by various methods for determining an optimum occlusal vertical dimension were analysed algebraically. Among total eleven relations ( (1) - (11) ), nine relations ( (3) - (11) ) were proved to be derived algebraically from the residual two most simple and fundamental relations ( (1) & (2) ) .
The methods used for determining an optimum occlusal vertical dimension are reasonable for complete denture use in view of golden proportion and influence of pathologic occlusal vertical dimension.
To establish the general method for determining an optimum occlusal vertical demension in view of golden proportion scientifically, epidemiological study is needed. The necessary steps for the study were recommended.

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In recent years, tissue regeneration has been performed using an expanded polytetrafluoroethylene (e-PTFE) membrane. On the other hand, the association between periodontal diseases and occlusion has not been completely clarified. I performed guided tissue regeneration (GTR) using an e-PTFE membrane after occlusal adjustment in a patient with bone resorption probably due to guidance by the first premolar during lateral movements and obtained the following results.
1. The periodontal tissue is closely associated with occlusion, and occlusal trauma appears to be closely involved in the destruction of the periodontal tissue.
2. When the GTR method is used for regeneration of the destroyed periodontal tissue, adequate examination of occlusion is important.

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