口腔医学 ›› 2025, Vol. 45 ›› Issue (6): 453-455.doi: 10.13591/j.cnki.kqyx.2025.06.010

• 病案分析 • 上一篇    下一篇

上颌第一磨牙颊侧额外尖伴C型根管1例

陈杰, 邢允波, 叶茂()   

  1. 徐汇区牙病防治所牙体牙髓科,上海(200032)
  • 收稿日期:2024-08-25 出版日期:2025-06-28 发布日期:2025-07-08
  • 通讯作者: 叶茂 E-mail: maoye063564@163.com
  • 基金资助:
    上海市徐汇区牙病防治所课题项目(SHXYF20-2306)

The buccal supernumerary cusp of maxillary first molar with c-shaped root canal: A case report

CHEN Jie, XING Yunbo, YE Mao()   

  1. Department of Endodontics, Xuhui District Dental Disease Prevention and Control Institute, Shanghai 200032, China
  • Received:2024-08-25 Online:2025-06-28 Published:2025-07-08

摘要:

上颌第一磨牙通常有4个牙尖,少数牙在近中舌尖舌侧存在卡式尖,而在近中颊尖颊侧存在多生牙尖鲜有报道,同时该牙尖与主体冠部牙本质、牙骨质及髓腔连通、共同融合成C型根则更为罕见。本病例报道1例右上颌第一磨牙颊侧额外尖伴C型根的根管治疗病例。

关键词: 额外尖, C型根, 根管治疗

Abstract:

Maxillary first molar teeth usually have 4 cusps, a few teeth have stuck cusps on the lingual side of the mesial tongue tip, while the presence of additional cusp on the buccal side of the mesial buccal tip is rarely reported, and it is even more rare for the cusp to connect with the dentin, cementum and pulp cavity of the main crown and fuse together to form C-shaped roots. A case of the buccal supernumerary cusp of the right maxillary first molar with C-shaped root canal was reported.

Key words: Supernumerary cusp, C-shaped root, Root canal therapy

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