Abstract】Objective To introduce the use of stainless steel wire combined with light-curing resin in fixing traumatic anterior teeth. Methods Twenty patients with anterior trauma who visited our department in the past year were selected and fixed with stainless steel wire combined with light-curing resin for loose teeth. Results All patients had good fixation of the loose anterior teeth without significant periodontal dental complications. Conclusion Stainless steel wire combined with light-curing resin can achieve better results in fixing traumatically loosened anterior teeth and is easy to operate. Tang Xiaorong, Department of Stomatology, First People’s Hospital of Nantong, China [Keywords] Light-curing resin; traumatically loosened anterior teeth; stainless steel wire. Trauma to anterior teeth is very common in clinical practice, and reimplantation of anterior teeth fixed and lost due to trauma causing loosening of anterior teeth is an effective method to retain dental integrity and restore normal masticatory function, appearance and speech [1]. In our department, we selected 20 patients who visited our clinic in the past year to choose stainless steel wire combined with light-cured resin for fixation, and achieved satisfactory clinical results, which are reported below. I. Data and methods General data: 20 patients (35 teeth) with anterior tooth trauma were admitted from August 20l1 to August 20l2, 15 males and 5 females, aged 18 to 46 years, including loose, displaced, semi-dislocated and fully dislocated. The injured teeth included 15 upper central incisors, 10 upper lateral incisors, 5 upper cuspids, 3 lower central incisors, and 2 lower lateral incisors. Methods: ①Check the loose displacement of the affected teeth:X-ray was taken to understand the root and periodontal situation, as well as the alveolar bone situation. If the tooth was not completely dislocated, the gum and tooth surface were repeatedly rinsed and wiped with saline, and the displaced tooth was reset manually; if the tooth was completely dislocated within 30 minutes, the alveolar socket was rinsed with saline under local anesthesia, foreign bodies and blood clots were flushed away, the dislocated tooth was cleaned with saline, the surface foreign bodies were removed, the periodontal membrane was carefully protected, and the tooth was implanted in the alveolar socket in the direction of the in-situ tract, and the patient was allowed to do an orthodontic occlusion to make the implanted tooth Completely reset the implanted tooth, avoid early contact with the implanted tooth, and suture the torn gum and oral axis membrane. If the time exceeds 0.5 hours, root canal treatment will be given before resetting the affected tooth according to the above method. Select a section of 0.4mm diameter stainless steel wire or three strands of orthodontic ligature wire, including at least 2 normal teeth on each side of the affected tooth, bend the wire according to the arc of the dental arch, sterilize it and prepare it for use. Acid etch the lip of the tooth, rinse, blow dry the tooth surface, light for 20 seconds, start from one side of the normal teeth with resin retaining wire one by one, light for 35 seconds for each tooth, after bonding all teeth retaining wire at the same level. Check that the affected teeth are not loose, add resin to the adjacent surfaces of the teeth and the stainless steel wire surface, modify the shape, reduce the wire exposure, remove the resin overhang that affects interdental cleaning, and make the surface smooth. Adjust and grind the opposing teeth so that there is no occlusal contact with the affected teeth. After surgery, patients were given oral anti-inflammatory drugs as needed, and taught the correct method of brushing to ensure good oral hygiene. The patient was reviewed at 1 week, 1 month, 3 months, 6 months and 1 year after surgery to check the fixation of the dislocated tooth, gingival index and periodontal condition, and to reinforce and repair any resin loss on the tooth surface during the review period. The cementation device was removed after 1 month postoperatively. Criteria for judging the efficacy [2]: ①Cured: no loosening of the affected tooth, no clinical symptoms, able to exercise normal masticatory function, no resorption of the root tip and alveolar bone seen on X-ray, and clear periodontal space. (2) Improved: the affected tooth can basically exercise chewing function, loosening within the degree of work, x-ray apical and alveolar bone resorption <2mm. (7) Invalid: the affected tooth loosens ≥II degree after six months of treatment, affecting the patient's normal chewing function or falling off, x-ray apical and alveolar bone resorption ≥2mm. effective = cured + improved. Among the 35 teeth fixed with wire combined with resin, 28 teeth were cured, 5 were improved and 2 failed, with an efficiency of 94.29%. In 5 cases, the resin of the tooth surface of the loosened tooth fell off, and in 4 cases, the device was removed on time after timely reinforcement with good results. 1 case failed to be fixed due to untimely follow-up, and in another case, the patient did not protect the tooth according to medical advice and ate normally after the injury because the patient was reimplanted after root canal treatment. All patients had good periodontal hygiene and the calculus plaque index was the same as that of the unfixed teeth. III, Discussion Dental trauma seriously affects human aesthetics and mastication, where many factors affect the prognosis of the affected teeth, including the patient's age, periodontal condition, degree of root development, and tooth fixation technique [3], and proper treatment, repositioning and fixation are the keys to ensure the success or failure of treatment. Fixation of ~ or more loose teeth with solid healthy teeth into a single unit in the form of a multi-rooted tooth, thus dispersing occlusal table forces and reducing or eliminating occlusal table trauma, good fixation and elimination of occlusal trauma are prerequisites to promote periodontal tissue repair and healing. Clinically used fixation methods, the traditional methods are ligature wire 8" ligature, metal arch splint ~ wire ligature, strong fiber belt fixation, etc., the use of metal splint wire ligature fixed because of the arch splint volume, and more lip and buccal mucosa damage. Wire "8" ligature fixed because the front teeth are single, wire tightening will produce a wedge force along the long axis of the tooth toward the root, so that the tooth has a tendency to be extruded, so that the front teeth are easy to lip tilt, and easy to damage the gingival papilla. High periodontal trauma and poor vertical control are also detrimental to the fixation of loose teeth [4]. Strong fiber band fixation is expensive, difficult to afford for the average patient, and difficult to perform in primary care units. In this study, the use of wire and light-cured resin fixation on the labial and buccal surfaces of the teeth can completely avoid the additional trauma caused by the ligature wire, and the operation is simple and gentle, with good appearance and feel, which is easier for patients to cooperate and accept, and generally does not affect the normal social activities of patients. Secondly, the surface of the bonding material is polished and treated, so there is no irritation and damage to the gums, lip and cheek mucosa, and the teeth are easy to clean. For cases with missing adjacent teeth, a thicker wire is chosen for fixation. The fixation method used in this paper can reset and fix loose, displaced or dislocated teeth according to the original occlusal relationship between upper and lower teeth to avoid occlusal trauma. The wire combined with light-curing resin as the fixed connector not only can make fine reset adjustment before fixation, but also has enough strength to make the occlusal force evenly distributed on each tooth, and when the traumatically dislocated tooth is stressed, the force is rapidly transferred to the abutment teeth, so that the reimplanted tooth is well protected, which is conducive to the recovery of periodontal tissues and easy to maintain oral hygiene and reduce the occurrence of dental caries and periodontitis in the process of dental trauma The efficacy is remarkable in the process of treatment of traumatic tooth injury. Some authors believe that this fixation method changes the previous wire ligation method of binding type of fixation, the fixation is more secure and stable, and it can prevent the twisting phenomenon that easily occurs when the loose teeth are subjected to force, which is beneficial to protect the loose teeth. Moreover, this method has strong bonding force, non-toxic, high affinity to teeth, forms continuous structure with teeth, good edge closure, no microgap leakage, insoluble in water, can exist in the mouth for a long time without destruction, will not cause food embedding and caries, and has no effect on gum, periodontal and systemic health. The wire and enamel adhesive fixation method has a smooth transition with the patient's tooth surface and no contact with the gingiva, which does not stimulate the gingiva and is not easy to store food, which is conducive to the cleaning and self-cleaning of the adjacent surfaces and gingival margins of the teeth and can avoid the poor stability of the traditional fixation method and the stimulation of the gingiva and periodontal tissues [5], effectively preventing the occurrence of gingival inflammation, atrophy and resorption of the alveolar ridge level in patients, which is conducive to maintaining periodontal health and prevent infection. In conclusion, for the anterior teeth that are loosened and dislocated after trauma, the wire combined with light-curing resin as a fixed connection is simple, has sufficient strength, is conducive to the healing of teeth and periodontal tissues, is more conducive to gingival health, follows the characteristics of comfort, aesthetics, convenience and efficacy, overcomes the shortcomings of traditional fixation methods, makes it easy for patients and physicians to accept, and is currently the more ideal method of primary care units. fixation method, worthy of clinical application and promotion. References 1, Liu Mei, Shen Aiguo, Zhou Hongyuan. Reimplantation treatment experience of traumatic dislocation of anterior teeth [J]. Journal of Nanchang University (Medical Edition), 20l0, 50(2):l06 -lll. 2, Lu Xiaofeng, Tang Huizhong. Analysis of I clinical efficacy of different methods for fixing traumatically loose teeth [J]. Dentistry, 2008, 28(2):95. 96. 3, Qin Ruifeng, Hu Kaijin, Hu Xiaoguang et al. Clinical fixation methods and efficacy analysis of traumatic anterior tooth loosening Chuan. Journal of Endodontics and Periodontology, 2006, 16(5): 291-292. 4, Luo Jinlan Tu Chunmei. Effectiveness of different methods for fixing traumatically loosened teeth [J] China Medical Guide 2011,9(1): 27-28 5, Liu B. The efficacy of wire-enamel adhesive fixation method for traumatic loose teeth [J] Chinese Practical Medicine, 2009,4(36):113-114.