Influence of Orthodontic Extrusion on Pulpal Vitality of Traumatized Maxillary Incisors
Influence of Orthodontic Extrusion on Pulpal Vitality of Traumatized Maxillary Incisors
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DOI：
10.1016/j.joen.2009.10.025
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发表时间：
2010-02-01
影响因子：
4.2
通讯作者：
Knoesel, Michael
中科院分区：
文献类型：
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作者：
Bauss, Oskar;Schaefer, Winfried;Knoesel, Michael
前言：这项回顾性研究的目的是研究正畸挤压对有创伤史的上颌切牙牙髓活力的影响。方法：对有创伤的牙齿(正畸/创伤组，n=77)和非创伤的牙齿(正畸组，n=400)和既往无正畸治疗的牙齿(创伤组，n=193)进行正畸挤压后的临床(牙冠颜色分级和低温喷雾敏感性试验)和X线片(根尖周片和全景片)的牙髓状况进行检查。牙科创伤分为硬组织损伤(牙釉质及釉质碎裂、牙釉质断裂不累及牙髓、牙釉质断裂伴牙髓损害、牙根骨折、冠根骨折)和牙周损伤(脑震荡、半脱位、侵袭、挤压、侧脱位、撕脱)。结果：正畸/创伤组牙髓坏死率明显高于正畸组(P
Introduction: The aim of this retrospective study was to examine the effect of orthodontic extrusion on the pulpal vitality of maxillary incisors with a history of trauma. Methods: Pulpal condition was examined clinically (rating of crown color and sensitivity testing with a cryogenic spray) and radiologically (periapical and panoramic radiographs) after orthodontic extrusion of previously traumatized (Orthodontics/Trauma group, n = 77) and nontraumatized teeth (Orthodontics group, n = 400) and after previous dental trauma without subsequent orthodontic treatment (Trauma group, n = 193). Dental traumata were divided into hard tissue injuries (fracture of enamel and enamel chipping, fracture of enamel-dentin without pulpal involvement, fracture of enamel-dentin with pulpal involvement, root fracture, crown-root fracture) and periodontal injuries (concussion, subluxation, intrusion, extrusion, lateral luxation, and avulsion). Results: Teeth in the Orthodontics/Trauma group showed a significantly higher frequency of pulp necrosis than teeth in the Orthodontics group (P