Admission passage pull-out guide plate on palate side of embedded tooth of upper jaw and manufacturing method thereof

Abstract

The invention relates to an admission passage pull-out guide plate on the palate side of an embedded tooth of an upper jaw and a manufacturing method thereof. The guide plate comprises a dentition supporting part, a guide bar and a positioning ring. The dentition supporting part is provided with a cavity matched with an upper dentition of a patient, the upper surface of the positioning ring is anarc-shaped curved face and is matched with the surface of the palate of the upper jaw bone of the patient in radian, the positioning ring is connected to the dentition supporting part through the guide bar, and the positioning ring corresponds to the position of a tooth extraction position of the embedded tooth to be pulled out. The manufacturing method comprises the following steps: reestablishing and matching the upper jaw bone and the upper dentition of the patient in a 1: 1 three-dimensional model; designing the dentition supporting part according to the upper dentition model; determiningthe tooth extraction point on the jaw of a CT reestablishing model of the upper jaw bone according to the position of the crown of the embedded tooth; designing the positioning ring according to the tooth extraction point and the surface radian of the jaw of the upper jaw bone model in the tooth extraction position; connecting the dentition supporting part and the positioning ring integrally through the guide bar; and carrying out 3D printing to obtain a finished product. The guide plate can position the tooth extraction position precisely and efficiently, so that the risk of damaging teeth isreduced.

Description

technical field [0001] The invention belongs to the technical field of extraction of impacted teeth, in particular to a palatal approach extraction guide plate for maxillary impacted teeth and a manufacturing method thereof. Background technique [0002] Impacted teeth refer to the normal position of the teeth due to developmental reasons, and the eruption of the normal time is blocked, or due to the mismatch between the amount of teeth and the amount of bone, resulting in abnormal tooth positions, which often occur in the maxilla due to the narrow position of the jaw and the impacted teeth are normal. The distance between the teeth roots is too narrow, and some supernumerary teeth (mostly anterior teeth) are located on the palatal side. Conventional buccal or labial approach often removes more bone, which is easy to cause infection and oronasal fistula. bring great pain to the patient. In addition, due to the abundant blood vessels on the palatal side and the unclear surgi...

AI Technical Summary

Problems solved by technology

[0002] Impacted teeth refer to the normal position of the teeth due to developmental reasons, and the eruption of the normal time is blocked, or due to the mismatch between the amount of teeth and the amount of bone, resulting in abnormal tooth positions, which often occur in the maxilla due to the narrow position of the jaw and the impacted teeth are normal. The distance between the teeth roots is too narrow, and some supernumerary teeth (mostly anterior teeth) are located on the palatal side. Conventional buccal or labial approach often removes more bone, which is easy to cause infection and oronasal fistula. cause great pain to patients

In addition, due to the abundant blood vessels on the palatal side and the unclear surgical field of view, during the extraction of supernumerary teeth through the conventional traditional palatal approach, even if there are preoperative panoramic films or CT reconstruction for positioning, it is still inevitable to remove more bone during the operation. quality, may injure the incisor hole, damage the descending palatine artery, lead to prolonged healing time, and increase the risk of postoperative infection

[0003] Existing operations rely more on the experience of the operator to determine the three-dimensional position of the supernumerary teeth. The treatment process often involves repeated confirmation of the position before the operation and direct incision. The following problems will occur: first, the positioning deviation of the panoramic film leads to a difference between the real position and the image position after the incision, which increases the risk of root damage during the operation and prolongs the operation time; second, the removal or grinding of the palatal bone If the selected position is not suitable, the extraction wound will expand, the incisor hole will be damaged, and the descending palatine artery will be damaged, which will lead to serious consequences.

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