Case Report

Simultaneous Intraoral and Extraoral Sinus Tracts Associated with a Mandibular Second Molar: A Case Report

Volume: 4 Number: 2 August 19, 2026
EN TR

Simultaneous Intraoral and Extraoral Sinus Tracts Associated with a Mandibular Second Molar: A Case Report

Abstract

Aim: The aim of this case report is to present the diagnostic process, nonsurgical endodontic treatment, and 12-month clinical and radiographic follow-up findings of a mandibular right second molar associated with simultaneous intraoral and extraoral sinus tracts. Case Report: A 21-year-old female patient with no known chronic systemic disease was referred to the endodontics clinic for evaluation of a possible odontogenic source of infection after being hospitalized for septic shock. Based on a detailed medical and dental history, clinical examination, pulp sensibility tests, periapical and panoramic radiographs, and cone-beam computed tomography findings, the pulpal diagnosis for tooth #47 was established as pulp necrosis, while the apical diagnosis was chronic apical abscess, accompanied by intraoral and extraoral sinus tract formation. Following chemomechanical preparation and intracanal medication with calcium hydroxide–chlorhexidine, root canal treatment was completed using gutta-percha and a resin-based root canal sealer. Clinical and radiographic follow-up examinations revealed marked healing of the intraoral and extraoral sinus tracts, a reduction in the size of the periapical lesion, and osseous healing. Conclusion: This case highlights the importance of considering a possible odontogenic source in the differential diagnosis of persistent cutaneous sinus tracts in the head and neck region and documents a favorable clinical and radiographic outcome following nonsurgical endodontic treatment.

Keywords

Supporting Institution

No financial support was received for this study.

Project Number

Not applicable

Ethical Statement

This case report was prepared in accordance with the principles of the Declaration of Helsinki. Institutional ethics committee approval was not required for a single-patient case report. Written informed consent was obtained from the patient for the publication of the clinical information and images.

Thanks

None.

References

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Details

Primary Language

English

Subjects

Endodontics

Journal Section

Case Report

Publication Date

August 19, 2026

Submission Date

July 22, 2026

Acceptance Date

August 10, 2026

Published in Issue

Year 2026 Volume: 4 Number: 2

APA
Duru, N. N., & Şimşek, N. (2026). Simultaneous Intraoral and Extraoral Sinus Tracts Associated with a Mandibular Second Molar: A Case Report. Uşak Üniversitesi Diş Hekimliği Fakültesi Dergisi, 4(2), 110-118. https://izlik.org/JA23FU57TL
AMA
1.Duru NN, Şimşek N. Simultaneous Intraoral and Extraoral Sinus Tracts Associated with a Mandibular Second Molar: A Case Report. J Dent Fac Usak Univ. 2026;4(2):110-118. https://izlik.org/JA23FU57TL
Chicago
Duru, Nisa Nur, and Neslihan Şimşek. 2026. “Simultaneous Intraoral and Extraoral Sinus Tracts Associated With a Mandibular Second Molar: A Case Report”. Uşak Üniversitesi Diş Hekimliği Fakültesi Dergisi 4 (2): 110-18. https://izlik.org/JA23FU57TL.
EndNote
Duru NN, Şimşek N (August 1, 2026) Simultaneous Intraoral and Extraoral Sinus Tracts Associated with a Mandibular Second Molar: A Case Report. Uşak Üniversitesi Diş Hekimliği Fakültesi Dergisi 4 2 110–118.
IEEE
[1]N. N. Duru and N. Şimşek, “Simultaneous Intraoral and Extraoral Sinus Tracts Associated with a Mandibular Second Molar: A Case Report”, J Dent Fac Usak Univ, vol. 4, no. 2, pp. 110–118, Aug. 2026, [Online]. Available: https://izlik.org/JA23FU57TL
ISNAD
Duru, Nisa Nur - Şimşek, Neslihan. “Simultaneous Intraoral and Extraoral Sinus Tracts Associated With a Mandibular Second Molar: A Case Report”. Uşak Üniversitesi Diş Hekimliği Fakültesi Dergisi 4/2 (August 1, 2026): 110-118. https://izlik.org/JA23FU57TL.
JAMA
1.Duru NN, Şimşek N. Simultaneous Intraoral and Extraoral Sinus Tracts Associated with a Mandibular Second Molar: A Case Report. J Dent Fac Usak Univ. 2026;4:110–118.
MLA
Duru, Nisa Nur, and Neslihan Şimşek. “Simultaneous Intraoral and Extraoral Sinus Tracts Associated With a Mandibular Second Molar: A Case Report”. Uşak Üniversitesi Diş Hekimliği Fakültesi Dergisi, vol. 4, no. 2, Aug. 2026, pp. 110-8, https://izlik.org/JA23FU57TL.
Vancouver
1.Nisa Nur Duru, Neslihan Şimşek. Simultaneous Intraoral and Extraoral Sinus Tracts Associated with a Mandibular Second Molar: A Case Report. J Dent Fac Usak Univ [Internet]. 2026 Aug. 1;4(2):110-8. Available from: https://izlik.org/JA23FU57TL