Singh Kunwarjeet, Gupta Nidhi
Department of Prosthodontics and Dental Materials, Shree Bankey Bihari Dental College and Research Centre, Ghaziabad, Uttar Pradesh, India.
Indian J Dent Res. 2012 Mar-Apr;23(2):145-8. doi: 10.4103/0970-9290.100416.
To suggest a custom bar supported overdenture treatment modality for prosthodontic management of patients with severe gag reflex.
Some patients have a severe gag reflex and cannot tolerate conventional maxillary complete dentures with maximum palatal coverage and extensions of all borders. The condition further gets complicated in patients suffering from respiratory problems along with severe gag reflex. Severe gagging acts as a barrier to treat such patients with accepted clinical procedures and prevent patients from wearing the prosthesis. By saving some of the remaining natural teeth and fabricating, a horse shoe shape palateless simple tooth or bar supported overdenture can be successfully used for treating such patients.
The remaining maxillary right and left canines were prepared with the tapered round end diamond bur to receive copings of custom bar after intentional root canal treatment of same teeth. Impression was made with light body and putty of the polyvinyl siloxane elastomer with double step putty wash technique. Impression was poured with die stone. Wax pattern of copings with bar was fabricated with inlay wax which was invested and casted. After retrieving the bar, it was finished and its fit was evaluated. The coping-bar assembly was finally cemented with the glass ionomer cement. Palateless overdenture was fabricated by conventional technique used for the fabrication of complete denture.
Palateless custom bar supported overdenture procedure can be successfully used for the management of patients with severe gag reflex with improved denture retention, stability, chewing efficiency and comfort of the patient.
提出一种定制杆支持式覆盖义齿治疗方式,用于对有严重恶心反射患者的口腔修复治疗。
一些患者有严重的恶心反射,无法耐受具有最大腭部覆盖范围和所有边缘延伸的传统上颌全口义齿。对于同时患有呼吸问题和严重恶心反射的患者,情况会更加复杂。严重的恶心是用公认的临床程序治疗此类患者并阻止患者佩戴假体的障碍。通过保留一些剩余的天然牙并制作马蹄形无腭板简单牙或杆支持式覆盖义齿,可以成功用于治疗此类患者。
对上颌左右两侧剩余的尖牙用锥形圆头金刚砂车针进行预备,在对这些牙齿进行根管治疗后,以容纳定制杆的帽状结构。采用双步印模膏冲洗技术,用聚醚醚酮弹性体的轻质体和印模膏制取印模。用石膏灌注印模。用嵌体蜡制作带杆帽状结构的蜡型,包埋并铸造。取出杆后,对其进行精加工并评估其适合性。最终用玻璃离子水门汀将帽状结构 - 杆组件粘结在一起。用制作全口义齿常规技术制作无腭板覆盖义齿。
无腭板定制杆支持式覆盖义齿程序可成功用于治疗有严重恶心反射的患者,提高义齿的固位、稳定性、咀嚼效率和患者舒适度。