Lateral Periodontal Cyst – A diagnostic dilemma: Report of a rare case with CBCT and histological findings

Abstract

Highlights Lateral periodontal cyst [LPC] is a rare developmental odontogenic cyst. It is difficult to differentiate a LPC from a cyst of endodontic origin by clinical and radiographic methods. Histopathological evaluation is the only method to confirm diagnosis. Usually seen in association of a vital tooth, but in this case it was seen in a non-vital tooth. LPC is usually seen within bone, but in this case besides Intrabony component there was a gingival presentation as a swelling.

Usage of Guided Bone Regeneration in the Case of Lateral Periodontal Cyst in the Maxilla with Buccal Cortical Expansion

“…Great interest in iPRF usage is still growing. Ramalingam et al's study suggests that GBR, xenograft/iPRF, and collagen membrane usage should be more common [18]. Used herein, collagen membrane resorption profile lasts 6-9 months, which is considered as a long period and is (1) adequate for bone/GBR healing procedures;…”

“…Since LPC has a low re-occurrence rate that requires in most cases simple cyst removal, with or without additional curettage, no other special approaches are needed [7,16,17]. Curettage itself is used to avoid remaining any cyst remnants and improve surgical quality [17][18][19][20][21]. On the other hand, cases of bigger, expansive LPC forms, along with GOC and BOC forms of LPS, which are rare, require a more radical approach because of a big possible re-occurrence rate around 22-35% in total [18,19,22].…”

“…Curettage itself is used to avoid remaining any cyst remnants and improve surgical quality [17][18][19][20][21]. On the other hand, cases of bigger, expansive LPC forms, along with GOC and BOC forms of LPS, which are rare, require a more radical approach because of a big possible re-occurrence rate around 22-35% in total [18,19,22]. Shah et al underlined the necessity of more extensive surgeries in cases of bigger pathologies; nevertheless, involvement of two or more teeth, propagation towards nasal cavity, or maxillary sinus or palate destruction in maxillary lesions are considered factors of more difficult surgery [17][18][19]22].…”

“…(2) enables soft tissue granulation on its surface; (3) can be shaped onto desirable position; (4) is easily sewn; (5) grants adequate passive stable position if sutured to adjacent tissues; (6) enhances bone healing. Collagen membrane should help in maintaining stable xenograft bone position [17][18][19]. In some cases of bigger cysts, especially in older peoples with chronic illness or possibilities of pathological bone fractures, or children, a two-step surgery consisting of Partsch I with histological evaluation and silicone or rubber obturator can be used [17,19].…”

Diversity of an Odontogenic cyst of Jaws – A case report with literature review

“…8,18 R Ramesh estimates that this odontogenic lesion only makes about 0.4% of all odontogenic cysts. 19 Since there is no evidence that LPC originated from a particular source, any theory concerning its genesis must be supported by presumptive evidence. 20 According to the available evidence, the lesion in the present case was present between the buccal root surfaces of the mandibular canine and lateral incisor, and the associated teeth were mobile and vital.…”