EVALUATION OF A VITAL PULPOTOMY PROCEDURE IN TEETH

一般认为，覆盖义齿可能是指当 剩余的牙齿和牙周组织不能支持传统的局部 假牙 病人的最大利益往往是通过不提供 他们是无齿的。 对20例患者进行临床和组织学研究的目的是 评价活髓切断术作为 在单根管牙齿中替代完全根管治疗， 保留覆盖义齿支持。 提出了一种方法，消除了根管治疗的需要， 覆盖义齿基牙。 这种方法减少了治疗时间和成本， 还提供了咀嚼和感官知觉的增加的效率， 以及患者的健康状态和增加的信心。 三个牙齿，满足覆盖义齿基牙的标准确定 在每个病人的一个牙弓中。 这些牙齿将根据需要进行治疗， 实现健康的牙周组织。 即刻义齿制作， 在递送时，每个基牙都具有利用 选择性不育技术 去除牙髓组织后， 选择深度，控制出血直至停止。 牙本质芯片 从牙髓壁获得并置于牙髓上。 Dycal被放置 在牙本质碎片上覆盖大约1 mm的深度，并且当固化时，银 里根是轻轻分层在使用横向冷凝，以避免压力 在果肉上。 剩余的髓室被填充， 轮廓符合传统覆盖义齿基牙的尺寸。 如果有任何髓核切断，将进行完整的根管治疗 牙齿恶化。 将在第1天、第2天和第3天进行插入后评价。 周、3个月、1年和2年。 将进行组织学评价 当第三颗牙齿（对照）在第三个月时被拔除时， 覆盖义齿的插入。 剩下的两个根将作为 长期覆盖义齿基牙。

It is generally accepted that an overdenture may be indicated when the remaining teeth and periodontium cannot support a conventional partial denture. The patients' best interests are often fulfilled by not rendering them edentulous. The purpose of this clinical and histological study of 20 patients is to evaluate the feasibility of utilizing vital pulpotomy procedures as a substitute for complete endodontic treatment in single-canal teeth to be retained for overdenture support. A method is proposed that eliminates the need for endodontic treatment on overdenture abutment teeth. This approach reduces treatment time and cost, yet provides increased efficiency in mastication and sensory perception as well as a state of well being and increased confidence to the patient. Three teeth that satisfy criteria for overdenture abutments are identified in one arch of each patient. These teeth will be treated, as necessary, to achieve a healthy periodontium. Immediate dentures are fabricated and at delivery, the abutment teeth each have a pulpotomy performed utilizing a selective sterile technique. Following removal of pulpal tissue to a selected depth, hemorrhage is controlled until stopped. Dentinal chips are obtained from the pulpal wall and placed over the pulp. Dycal is placed over the dentinal chips to approximately a 1 mm. depth and when set, silver amalgan is gently layered in using lateral condensation to avoid pressure on the pulp. The remaining pulp chamber is filled and root surface contoured to meet the dimensions of conventional overdenture abutments. Complete root canal therapy will be performed if any of the pulpotomized teeth exacerbate. Post-insertion evaluations will be performed at 1 day, 2 weeks, 3 months, 1 year and 2 years. Histologic evaluation will be made when the third tooth (control) is extracted at the third month after insertion of the overdenture. The remaining two roots will serve as long-term overdenture abutments.