Int J Stomatol

Int J Stomatol ›› 2021, Vol. 48 ›› Issue (5): 536-540.doi: 10.7518/gjkq.2021071

• Original Articles • Previous Articles     Next Articles

Association between ponticulus posticus and maxillary palatally impacted canine: a cone-beam computed tomography study

Tian Haonan(),Lin Min,Xie Congman,Ren Aishu()   

  1. Stomatological Hospital of Chongqing Medical University & Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences & Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, China
  • Received:2021-01-12 Revised:2021-05-21 Online:2021-09-01 Published:2021-09-10
  • Contact: Aishu Ren E-mail:2018110857@stu.cqmu.edu.cn;500220@hospital.cqmu.edu.cn
  • Supported by:
    Program for Innovation Team Building at Institutions of Higher Education in Chongqing in 2016(CXTDG2016-02006)

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Abstract:

Objective This study was performed to investigate the association and prevalence of ponticulus posticus in patients with maxillary palatally impacted canine by using cone-beam computed tomography (CBCT). Methods We selected 117 patients with maxillary palatally impacted canine as the experimental group and 147 with normally erupted canine as the control group. CBCT images and Mimics 20.0 software were used to record the morphology of the ponticulus posticus. Statistical analysis was performed using SPSS 21.0. Results The prevalence rates of ponticulus posticus were 35.04% in the experimental group and 21.09% in the control group. The prevalence between the two groups was statistically significant (P<0.05). No significant difference was found between the prevalence of unilateral and bilateral ponticulus posticus in the two groups (P>0.05). The prevalence of ponticulus posticus in males was significantly higher than that in females in the experimental group (P<0.05). By contrast, the gender difference in the control group was not statistically significant (P>0.05). The prevalence of ponticulus posticus type 1+2 was higher in the experimental group than that in the control group (P<0.05). Conclusion The prevalence of ponticulus posticus in patients with maxillary palatally impacted canine was significantly higher than that in patients with normally erupted canine, with higher prevalence rate in males.

Key words: maxillary palatally impacted canine, ponticulus posticus, cone-beam computed tomography

CLC Number: 

  • R78

TrendMD: 

Fig 1

Ponticulus posticus types"

Tab 1

Comparison of ponticulus posticus types between experimental group and control group n(%)"

类型
分组		 实验组 对照组
男性 女性 合计 男性 女性 合计
1+1 22（45.83） 54（78.26） 76（64.96） 43（79.63） 73（78.49） 116（78.91）
2+2 6（12.50） 3（4.35） 9（7.70） 3（5.56） 4（4.30） 7（4.76）
3+3 1（2.08） 0（0） 1（0.85） 0（0） 1（1.08） 1（0.68）
4+4 2（4.16） 0（0） 2（1.71） 2（3.70） 1（1.08） 3（2.04）
1+2* 7（14.58） 4（5.80） 11（9.40） 1（1.85） 6（6.45） 7（4.76）
1+3 4（8.33） 1（1.45） 5（4.27） 2（3.70） 3（3.23） 5（3.40）
1+4 1（2.08） 2（2.90） 3（2.56） 1（1.85） 2（2.15） 3（2.04）
2+3 1（2.08） 2（2.90） 3（2.56） 1（1.85） 1（1.08） 2（1.36）
2+4 4（8.33） 2（2.90） 6（5.13） 1（1.85） 2（2.15） 3（2.04）
3+4 0（0） 1（1.45） 1（0.85） 0（0） 0（0） 0（0）
合计 48 69 117 54 93 147
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