모델 분석 개념
올바른 모델 분석은 모든 설정의 필수이기 때문에 최대한의 지식과 신념을 가지고 세심한 주의를 기울여 완료해야 합니다. 모델 분석은 대부분 작업자가 CAD에서 완료하며, 상악과 하악의 해부학적 특성을 설정하고 이를 방향과 평면으로 자동 일치시키는 작업이 포함되며, 이는 치아의 디지털 설정의 기초로 사용됩니다
모델 분석 마법사 모드
모델 분석의 개별 단계는 화면 왼쪽에 있는 마법사 창에 요약되어 있으며, 두 가지 중요한 구성 요소로 이루어져 있습니다. 모델 분석의 모든 단계는 창 상단 [1]에 리스트로 나열됩니다. 필요한 모델 분석 단계의 아이콘을 마우스 왼쪽 버튼으로 클릭하면 이전 단계로 돌아갈 수 있습니다. 창의 두 번째 영역 [2]에서는 현재 모델 분석 단계에 대한 설명과 미리 보기를 제공합니다.
편악 덴쳐의 경우 바이트 림 스캔이 필요하지 않지만, 대합치에 대한 모델 분석이 수행이 필요합니다. |
교합 평면 정의 교합면은 치아를 설정하는 동안 수직 방향으로 사용됩니다. 이는 정상교합 치열의 세 점을 사용하여 정의됩니다:
|
'3점을 지정하여 교합 평면 만들기' 기능을 사용하면 진단 모델 또는 심미적 템플릿을 사용하여 교합면을 정의할 수 있습니다. • 교합면을 정의하려면 위에서 설명한 위치에서 세 점을 클릭한 다음 '적용' 버튼을 클릭합니다. • 이후에 포인트(교합면)를 조정하려면 마우스 왼쪽 버튼을 누른 상태에서 포인트를 드래그합니다. • 다른 방법으로는, 무치악에 세 개의 점을 추가하고 슬라이드를 사용하여 점과 교합면의 거리를 설정합니다. •개별 거리를 지정하려면 각 지점에서 슬라이드 컨트롤 오른쪽에 있는 자물쇠 아이콘을 클릭합니다. |
• 교합기 평면 정의 [4] 사용 가능한 심미적 템플릿이나 진단 모델이 없는 경우, 미리 정의된 교합면을 사용할 수 있습니다. 드롭다운 메뉴 중 하나를 선택하면 교합면을 자동으로 생성하고 시각화 할 수 있습니다.
기본 모델 분석
전체 모델 분석
|
Determination of the middle of the anterior alveolar ridge contour in the lower jaw • This point is generated automatically. • Click and drag the point along the median line of the lower jaw as required. The marking of the center of the alveolar ridge is used as a point of reference when positioning the basal surfaces of the anterior teeth. |
Determination of the labial periphery line in the lower jaw • The labial periphery line is calculated automatically and runs through the deepest point of the labial mucobuccal fold. • To manually adjust the line, click and drag the labial periphery line as desired.
|
Determination of the alveolar ridge midline in the lower jaw • The alveolar ridge midline in the lower jaw is generated automatically. • The mesial edge of the retromolar triangle is used as the most distal point of the alveolar ridge median line. Automatic detection is only an aid and should be checked and, if necessary, adjusted where necessary. This is the only way to ensure the position of the first molar is detected without any problem in the next step. • To modify the alveolar midline, click the green fixation points and drag them as desired. • Delete points by holding the left mouse button and pressing the right mouse button simultaneously. • Left click to add points to the line. The alveolar ridge midline is used as orientation of the initial anterior tooth set-up. In addition, the deepest area of the alveolar ridge on this line is determined and given as the position of the first molar. The distal end points of the displayed alveolar ridge midline are used as the limit for the stop line (see Determination of the stop line in the lower jaw) and should, therefore, not be extended onto the retromolar pad. |
Determination of the first molar tooth in the lower jaw • The positions of the first molars are defined in the lower jaw using these points, which are generated automatically. • They should be located at the deepest point of the alveolar ridge in relation to the occlusal plane. In the case of deep severe extraction wounds in the posterior region, it could happen that these regions are incorrectly determined as the positions of the first molars. • If required, move points by left clicking and dragging them. The positions of the mandibular first molars are part of the basis for selection of the correct size of posterior tooth. The first molars should be positioned on the deepest area of the alveolar ridge in relation to the occlusal plane, as the center of mastication is in this area. |
Determination of the stop line in the lower jaw • The stop line is generated automatically with an angle of 22.5°, extending from the deepest point of the alveolar ridge line in relation to the occlusal plane and is displayed in the software as points on the alveolar ridge contour. • If this angle is not exceeded before the end of alveolar ridge marking, the stop line corresponds to the most distal point of the alveolar ridge displayed. • If required, move points by left clicking and dragging them. The stop line represents the distal margin of the setting up area and therefore determines whether or not a second molar will be set up. If an angle of 22.5° is not achieved for anatomical reasons (e.g. with a very flat jaw), the teeth should not extend beyond the mesial margin of the retromolar triangle. |
Determination of the alveolar ridge midline and position of the first molar in the upper jaw • The alveolar midline contour is automatically generated in the upper jaw. The positions of the lower first molars are transferred to the alveolar midline of the upper jaw. • To change or adjust the alveolar midline contour, click the green fixation points and drag them as desired. • Delete points by holding the left mouse button and pressing the right mouse button simultaneously. • Left click to add points to the line. • It is usually necessary to adjust the automatically detected alveolar ridge contour and therefore also the position of the first molars buccally or labially. The alveolar ridge midline is used for transferring the position of the first molar of the lower jaw to the upper jaw. The position of the first molar of the upper jaw is a reference point for the outer correction.
|
Correction area on the upper jaw Verify inner and outer correction areas
|
Correction area on the lower jaw Verify inner and outer correction areas
|
Automatic calculation of the common basic statics, checking and adjustment In the final step of model analysis, common basic statics, which is used as a basis for the automatic set-up, is calculated from the points and lines already defined. This is the final step of the model analysis in which all the results are visualized and can be rechecked for correctness. • Navigate using the wizard bar or the “Back” button to adjust each individual step of the model analysis.
|
Single arch model analysis
Determination of the position of the first molar tooth on the opposing jaw • Click to mark the positions of the molars. • If required, move points by left clicking and dragging them. |
Determination of the position of the first premolar tooth on the opposing jaw • Click to mark the positions of the premolars. • If required, move points by left clicking and dragging them.
|
Marking the central incisors of the opposing jaw • Click to define points on the mesial contact of the central incisors on the opposing jaw. • If required, move points by left clicking and dragging them.
|
Determination of the median line of the opposing jaw • The median line of the opposing jaw is determined automatically. • Click the median line and drag to move it. • Hold CTRL and drag to rotate the median line around its rotation point. Click and drag the rotation point to move its position. |