Prognosis of teeth with external root resorption caused by adjacent impacted teeth

doi:10.7518/hxkq.2019.03.010

Abstract

Abstract:

Objective This study aimed to investigate the prognosis of permanent teeth with external root resorption (ERR) caused by adjacent impacted teeth. Methods A total of 75 ERR teeth (permanent teeth) caused by adjacent impacted teeth of 63 patients were included. The prognosis of ERR teeth was analyzed followed by minimally invasive extraction of the adjacent impacted teeth. The time of follow-up was six months. The relationship between prognosis of ERR teeth and patients’ age, gender, root number, type of root resorption and degree of root resorption were analyzed. Results In the 75 ERR teeth, 67 teeth (89.3%) did not show pulpitis symptoms. The clinical outcome was found to be related with age (r=0.330, P<0.05), whereas no relationships with gender, root number, as well as type and degree of root resorption were observed (P>0.05). Pulpitis symptom was not found in ERR teeth of patients under 30 years old. Conclusion For ERR teeth caused by adjacent impacted teeth, keeping the pulp vital after surgical removal of impacted teeth is highly probable. Post-operative follow-up instead of preventive root canal therapy of ERR teeth is recommended.

Key words: impacted teeth, external root resorption, prognosis

CLC Number:

R782.11

Ying Lai,Weilin Pan,Chang Liu,Jingyuan Huang,Chengge Hua. Prognosis of teeth with external root resorption caused by adjacent impacted teeth[J]. West China Journal of Stomatology, 2019, 37(3): 280-284.

Figures/Tables 9

Tab 1

Tab 2

Tab 3

Tab 4

Tab 5

Fig. 1

Fig. 2

Fig. 3

Tab 6

References 12

[1]	Oenning AC, Neves FS, Alencar PNB , et al. External root resorption of the second molar associated with third molar impaction: comparison of panoramic radiography and cone beam computed tomography[J]. J Oral Maxillofac Surg, 2014,72(8):1444-1455. doi: 10.1016/j.joms.2014.03.023 URL
[2]	Wang DM, He XT, Wang YL , et al. External root resorption of the second molar associated with mesially and horizontally impacted mandibular third molar: evidence from cone beam computed tomography[J]. Clin Oral Investig, 2017,21(4):1335-1342. doi: 10.1007/s00784-016-1888-y URL pmid: 27316639
[3]	Jawad Z, Carmichael F, Houghton N , et al. A review of cone beam computed tomography for the diagnosis of root resorption associated with impacted canines, introducing an innovative root resorption scale[J]. Oral Surg Oral Med Oral Pathol Oral Radiol, 2016,122(6):765-771. doi: 10.1016/j.oooo.2016.08.015 URL
[4]	Katkar RA . Mesially inclined third molars may or may not be associated with external root resorption in adjacent second molars[J]. J Evid Based Dent Pract, 2015,15(3):131-133. doi: 10.1016/j.jebdp.2015.07.007 URL
[5]	Ahangari Z, Nasser M, Mahdian M , et al. Interventions for the management of external root resorption[J]. Cochrane Database Syst Rev, 2010( 6): CD008003.
[6]	Fuss Z, Tsesis I, Lin S . Root resorption—diagnosis, classification and treatment choices based on stimulation factors[J]. Dent Traumatol, 2003,19(4):175-182. doi: 10.1034/j.1600-9657.2003.00192.x URL
[7]	Consolaro A, Bittencourt G. Why not to treat the tooth canal to solve external root resorptions? Here are the principles[J]. Dent Press J Orthod, 2016,21(6):20-25. doi: 10.1590/2177-6709.21.6.020-025.oin URL
[8]	Al-Momani Z, Nixon PJ . Internal and external root resorption: aetiology, diagnosis and treatment options[J]. Dent Update, 2013,40(2):102-112. doi: 10.12968/denu.2013.40.2.102 URL
[9]	Abd-Elmeguid A, Yu DC . Dental pulp neurophysiology: part 2. Current diagnostic tests to assess pulp vitality[J]. J Can Dent Assoc, 2009,75(2):139-143.
[10]	华成舸 . 微创拔牙的刚体力学分析[J]. 华西口腔医学杂志, 2017,35(2):119-123.
	Hua CG . Geostatics in minimally invasive surgical exodontias[J]. West China J Stomatol, 2017,35(2):119-123.
[11]	Holcomb JB, Dodds RN, England MC . Endodontic treatment modalities for external root resorption associated with impacted mandibular third molars[J]. J Endod, 1983,9(8):335-337. doi: 10.1016/S0099-2399(83)80149-6 URL
[12]	Pai AV, Khosla M . Root resection under the surgical field employed for extraction of impacted tooth and management of external resorption[J]. J Conserv Dent, 2012,15(3):298-302. doi: 10.4103/0972-0707.97966 URL

年龄段	无症状	有症状未	已行RCT	拔除	失访	合计
/岁	活髓	行RCT	已行RCT	拔除	失访	合计
11~30	53	0	0	0	1	54
31~40	7	1	0	1	1	10
41~50	5	0	2	2	0	9
51~60	2	0	0	0	0	2

性别	无症状	有症状未	已行	拔除	失访	合计
性别	活髓	行RCT	RCT	拔除	失访	合计
男	24	0	2	1	1	28
女	43	1	0	2	1	47

牙根	无症状	有症状未	已行	拔除	失访	合计
数量	活髓	行RCT	RCT	拔除	失访	合计
1	18	0	0	0	0	18
2	19	1	2	1	0	23
3	30	0	0	2	2	34

牙根吸	无症状	有症状未	已行	拔除	失访	合计
收类型	活髓	行RCT	RCT	拔除	失访	合计
A	27	0	0	1	2	30
B	18	1	1	0	0	20
C	2	0	0	1	0	3
D	20	0	1	1	0	22

牙根吸	无症状	有症状未	已行	拔除	失访	合计
收程度	活髓	行RCT	RCT	拔除	失访	合计
轻度	45	1	1	2	2	51
中度	12	0	1	0	0	13
重度	10	0	0	1	0	11