Open Access Case Report

Treatment of Esthetic Sequelae of Peripheral Ossifying Fibroma with Suine Collagen Matrix-Case Report

Manfro R1, García GFF2, Poubel VLN3, Gondak RO4, Souza VZ5* and Silva LR6

1Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil

2University of Southern Santa Catarina, Palhoça, Santa Catarina, Brazil

3Catholic University of Brasilia, Federal District, Brasilia, Brazil

4Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil

5University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil

6University of the West of Santa Catarina, Joaçaba, Santa Catarina, Brazil

Corresponding Author

Received Date: August 17, 2022;  Published Date: September 01, 2022

Abstract

The aim of this study is report the treatment of a case of a peripheral ossifying fibroma. In this case report, we present the clinical course of a 23-year-old female patient with a mass in the gingival tissue. The patient was submitted to excisional biopsy and the defect generated by the removal of the lesion was corrected using biomaterials. One year of follow-up, it was not possible to see any esthetic defect when compared with the contralateral side.

Keywords: Dentistry; Stomatology; Case report

Introduction

Benign gingival lesions usually have good prognosis and management is easily performed. The main problem is lesions situated in anterior maxillary areas. Although technically easy, resection can cause esthetics problems, and treatment is hard to accomplish [1].

There are three categories to bone fibrous lesions. The first one is fibrous dysplasia, followed for reactive lesions and ossifying fibroma neoplasms. Reactive lesions can be categorized as central and peripheral [2]. Peripheral lesions originate from cells located in periodontal ligament and central lesions comes from the endosteum.

Peripheral Ossifying Fibroma (POF) is a reactional lesion that use to appear in the attached gingiva of young women. Its prevalence is 3,1% of all oral tumors and 9,6% of all gingival lesions [3]. The etiology is thought to be originated from an irritating factor, such as plaque, calculus, trauma, misfit prosthesis, dental restorations, and microorganisms [4-6]. There are two theories postulated to understand the etiology. The first one postulates that the lesion initiates as a pyogenic granuloma that becomes calcified. The other one postulates that the lesion originates from an inflammatory hyperplasia of periodontal ligament [4].

Size use to be less than 1,5cm in its biggest part, and its clinical manifestation include sometimes pain, and could cause teeth displacement depending on the size of the lesion [7]. Histologically presents as a fibroblastic proliferation with ossification spots [4].

Normally, treatment is accomplished with surgical excision and local factors removal. Periodontal ligament and periosteum should be also removed to increase the success and reduce recurrence rate [8].

The main objective of this paper is to present a case report of peripheral ossifying fibroma in the anterior region of the maxilla treated with excision and reconstruction with supine collagen matrix.

Case Report

A 23-year-old female was presented to the maxillofacial consultation at Private Clinical in Florianopolis, Santa Catarina, Brazil, with a mass in the gingival tissue. It was painless and it was possible to detect a sessile exophytic lesion located above the right central incisor measuring 3 X 2 X 1,1cm, without changes in color, indurations, or ulcerations. There was no tooth displacement. The mass appeared 5 months before the analysis and had gradually increased in size (Figures 1, 2).

irispublishers-openaccess-dentistry-oral-health
irispublishers-openaccess-dentistry-oral-health

Previously to the excisional biopsy, it was explained to the patient the necessity to remove an additional amount of tissue as a safe margin to avoid recurrences. As well, it was also explained that due to the location of this lesion, it would be necessary to reconstruct at the same time the gingival tissue with bovine collagen matrix.

The procedure was performed under local anesthesia using Articaíne 4% with adrenaline 1:100.000. Alveolar superior anterior nerve was blocked using 0,8mL of solution. With a 15C blade, it was done an incision around the lesion and using a proper instrument the lesion was detached. The surgical site was compound with and without periosteum covering alveolar bone (Figure 3). With the aim to avoid a bigger defect and leave exposed bone, it was realized a gingival reconstruction with bovine collagen matrix (Figure 4). This graft was enveloped in the edge of the defect and sutured with mononylon 5-0 with the reminiscent gingival (Figure 5).

irispublishers-openaccess-dentistry-oral-health
irispublishers-openaccess-dentistry-oral-health
irispublishers-openaccess-dentistry-oral-health

The material was sent to the Buccal Pathology Laboratory situated at the Federal University of Santa Catarina, Brazil. Histologically, the specimen showed an intact gingival epithelium overlying the connective tissue stroma (Figure 6). The connective tissue was densely fibro cellular with endothelial proliferation and several irregular basophilic calcified areas (Figure 7). A mild chronic inflammatory infiltrate was noted into the lamina propria. Based on histological findings, the lesion was diagnosed as peripheral ossifying fibroma.

irispublishers-openaccess-dentistry-oral-health
irispublishers-openaccess-dentistry-oral-health

The knots were removed after 10 days of surgical procedure. Hygiene was conducted with flexible cottons embedded with Di gluconate of chlorhexidine 0,12%. In the 30th day of follow-up, it was observed a partial substitution of the graft for health gingiva without clinical evidence of acute inflammation (Figure 8). After 4 months the surgical site presented as health gingiva without defect and with the color as pink as the adjacent ones (Figure 9). One year of follow-up, it was not possible to see any esthetic defect when compared with the contra-lateral incisor (Figures 10A, 10B).

irispublishers-openaccess-dentistry-oral-health
irispublishers-openaccess-dentistry-oral-health
irispublishers-openaccess-dentistry-oral-health
irispublishers-openaccess-dentistry-oral-health

Discussion

Peripheral ossifying fibroma (POF) is a lesion which is easily treated and has a good prognosis when periosteal resection is included in treatment plan. Recurrence rate varies from 2 to 9% according to literature [4, 9-12]. As mentioned previously, the main problem concerning this treatment is lesions located in anterior region, which brings a poor esthetic outcome. Furthermore, other issues are possible like radicular exposition, dentinary hyper sensibility and impossibility of hygiene maintenance.

Other question that must be discussed previously is the reconstruction time. Many authors would rather await for initial healing to detect the real damage extension [13]. Another group defends that begin lesion with low risk of recurrence should be treated with reconstruction at the same time of surgery. Though, the last ones try to avoid damages to the adjacent structures [14].

Many techniques have been proposed in literature with the goal to avoid these poor esthetics outcomes as subepithelial connective tissue graft (SCTG) or a coronally positioned flap (CPF), laterally positioned flap (LPF). CPF has a high success rate, although it cannot be realized in regions with an insufficient amount of quarantined tissue and also it cannot be realized in the presence of a very short vestibule. SCTG needs a donor site, and this technique is too sensitive. LPF seems to be a good alternative [1, 8].

Mucograft (MG) is a collagen matrix composed of type I and III porcine collagen without cross-linking or chemical treatment. It has two layers, one is thin and the other one is smooth compact [15]. Studies evaluating the behavior of this material have demonstrated minimal inflammation and absence of multinucleated giant cells, as well as a high success rate for reconstruction of bone defects [16, 17]. Some authors have stated that resorbable collagen membrane (RCM) used to guide bone regeneration has been better than MG [15, 18].

In this case report presented the authors decided to use a simultaneous reconstruction using xenogeneic graft with aim to protect the surgical area. The expectancy after this procedure was to reconstruct the residual defect using a autologous graft from the palate, due the lack of evidence in literature about the results achieved with this material. But, after following up the patient, it was able to see an excellent outcome. In the first months the results were promisor and after 4 months the second time reconstruction was rejected, because there were no signs of sequelae, which was confirmed after 12 months of follow up.

This paper hypothesized that xenogeneic gingival matrix could be a good choice for primary reconstruction of tumors located on anterior region of the maxilla, which avoids a later reconstruction and improves the prognosis.

Summary

The objective of this work is to report the treatment of a case of peripheral ossifying fibroma. In this case report, we present the clinical evolution of a 23-year-old female patient with a mass in gingival tissue. The patient underwent excisional biopsy and the defect generated by the removal of the lesion was corrected with biomaterials. After one year of follow-up, it was not possible to observe any aesthetic defect when compared to the contralateral side.

Acknowledgement

None.

Conflict of interest

No Conflict of Interest.

References

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