China Journal of Oral and Maxillofacial Surgery ›› 2021, Vol. 19 ›› Issue (2): 167-172.doi: 10.19438/j.cjoms.2021.02.013

• Clinical Reports • Previous Articles     Next Articles

A retrospective study on the prognosis of retaining injured deciduous teeth after intrusive luxation in 26 cases

SHENG Kai, LAI Guang-yun, DING Qin, WANG Jun   

  1. Department of Pediatric Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology. Shanghai 200011, China
  • Received:2020-09-24 Revised:2020-11-02 Online:2021-03-20 Published:2021-05-11

Abstract: PURPOSE: To analyze the prognosis of retaining injured deciduous teeth after intrusion and the related factors to prognosis. METHODS: This was a retrospective study of patients diagnosed as deciduous tooth intrusion treated from March 2018 to October 2019. According to the inclusive and exclusive criteria, the data of 36 intruded teeth from 26 patients were selected. The occurrence of re-eruption and pulp prognosis were recorded, their relevance to the severity of intrusion and patients' age was evaluated. The data was analyzed using SPSS 23.0 software package. RESULTS: There were 33 teeth treated with watchful waiting policy. 97% re-erupted spontaneously, 54.6% re-erupted completely and 42.4% partially re-erupted. Only one tooth developed ankylosis. During the follow-up period, 42.4% of the observed teeth suffered from pulp necrosis/infection related resorption, and the remaining showed no clinical symptoms. No obliteration was observed among the teeth. Age and the degree of intrusion had no significant influence on tooth re-eruption, but the degree of intrusion had significant influence on pulp prognosis(P<0.05). There were 3 teeth treated with surgical reposition, without preventive pulp treatment, external root resorption happened in all these cases. CONCLUSIONS: For deciduous tooth intrusion, re-eruption can be expected in most watchful waiting cases regardless of age and the intrusion severity, while the prognosis of pulp was correlated with the degree of intrusion.

Key words: Deciduous teeth, Traumatic dental injury, Intrusion, Retaining teeth, Watchful waiting policy, Surgical reposition

CLC Number: