Nakajima T, Sasakura H, Kato N
J Oral Surg. 1980 Jan;38(1):46-50.
Treatment of a severe tethering of the mandible by surgery and subsequent exercise of the jaw with a newly devised mouth gag, consisting of two blocks of acrylic resin with a screw expander between them, is described. The mandible was gradually forced to open and was retained in the opened position by rotating the screw against the resistance of scar contraction without much pain. Possible development of trismus after excision of a tumor in the lower retromolar area because of surgical injury to the medial pterygoid muscle and postoperative scarring was avoided by means of the appliance.
本文描述了通过手术治疗严重的下颌骨粘连，并随后使用一种新设计的口塞进行下颌运动训练的方法。该口塞由两块丙烯酸树脂块组成，中间有一个螺旋扩张器。通过旋转螺丝克服瘢痕收缩的阻力，下颌骨逐渐被撑开并保持在张开位置，且疼痛轻微。使用该装置可避免因下颌磨牙后区肿瘤切除术中翼内肌手术损伤及术后瘢痕形成而可能导致的牙关紧闭。
