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由于基骨决定于牙齿的位置。故在口腔错(牙合)畸形模型分析时,要做基骨测量。从而了解上、下基骨发育是否正常以及牙弓与基骨的关系。现介绍一种自制基骨测量仪,它可在完成测量基骨长度的同时测量各段牙弓的长、宽度。该仪制做简单,操作方便,测据准确。具体制法如下: 主尺制做:用一15cm规格的不锈钢尺,在其刻度8cm处,用砂片将其切成a、b两段;再在b段中央,从刻度9.5cm处起到尺端孔处,开一67.5mm×2.5mm槽沟;随后将b段尺垂直于a段尺中点并重叠10mm,将其点焊为一整体(如下图)
Because the base bone is determined by the position of the teeth. Therefore, oral malocclusion (malocclusion) deformity model analysis, to do the base bone measurement. To understand the upper and lower base bone development is normal and the relationship between the dental arch and the base bone. Now introduce a homemade bone measuring instrument, which can measure the length of the base bone at the same time measuring the length and width of the dental arch. The instrument system to do simple, easy to operate, accurate measurement. The specific system is as follows: The main scale system to do: With a 15cm stainless steel ruler, at the scale of 8cm, with sand cut it into a, b two; then b center, from the scale of 9.5cm Feet at the hole, open a 67.5mm × 2.5mm groove; then the b section perpendicular to the ruler and a section of midpoint and overlap 10mm, the spot welding as a whole (as shown)