Restor Dent Endod.  2017 May;42(2):77-86. 10.5395/rde.2017.42.2.77.

Recognition and management of palatogingival groove for tooth survival: a literature review

Affiliations
  • 1Department of Conservative Dentistry, School of Dentistry, Chonbuk National University, Jeonju, Korea. mksdd@jbnu.ac.kr
  • 2Department of Dentistry, Kosin University Gospel Hospital, Busan, Korea.
  • 3Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea.

Abstract

Palatogingival groove (PGG) is an anomaly in the maxillary anterior teeth, often accompanied by the area of bony destruction adjacent to the teeth with no carious or traumatic history. The hidden trap in the tooth can harbor plaque and bacteria, resulting in periodontal destruction with or without pulpal pathologic change. Related diseases can involve periodontal destruction, combined endodontic-periodontal lesions, or separate endodontic and periodontal lesions. Disease severity and prognosis related to PGG depend on several factors, including location, range, depth, and type of the groove. Several materials have been used and recommended for cases of extensive periodontal destruction from PGG to remove and block the inflammatory source and recover the health of surrounding periodontal tissues. Even in cases of severe periodontal destruction, several studies have reported favorable treatment outcomes with proper management. With new options in diagnosis and treatment, clinicians need a detailed understanding of the characteristics, treatment, and prognosis of PGG to successfully manage the condition.

Keyword

Endodontic; Palatogingival groove; Periodontal

MeSH Terms

Bacteria
Diagnosis
Prognosis
Prostaglandins G
Tooth*
Prostaglandins G

Figure

  • Figure 1 Clinical and radiographic findings for diagnosis of the periradicular pathosis associated with PGG. (a) A sinus tract was observed on the palatal side of the right maxillary lateral incisor (blue triangle); (b) Deep and narrow pocket depth (> 10 mm) was detected on the palatal side along the root in the vertical direction; (c) A diagnostic periapical radiograph shows pear-shaped or tear-drop-like radiolucency in the coronal aspect of the root apex (pointing finger); (d) A CBCT scan shows a groove with adjacent radiolucency on the palatal aspect of the tooth (white triangle). It is strongly suspected that the pathogen was associated primarily with the PGG; (e) Endodontic treatment was performed to eliminate the possible irritant in the root canal space. PGG, palatogingival groove; CBCT, cone beam-computed tomography.

  • Figure 2 Surgical procedure for management of PGG-related periradicular pathosis. (a) PGG is verified along the root surface to the region of the apical third (yellow triangle); (b) The PGG was filled with Biodentine after saucerization (pointing finger); (c) The bony defect was filled with artificial bone graft material; (d) The bone-filled lesion was covered by an absorbable membrane; (e) Post-operative radiograph; (f) 8 month follow-up radiograph reveals healing of the periradicular lesion. PGG, palatogingival groove.


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