ABSTRACT
BACKGROUND: Reducing the thickness of hard dental tissues through the preparation of teeth for fixed prosthodontics represents an aggression for the dentin-pulp complex and may cause changes in dental pulp tissues, by means of acute or chronic inflammation, or by asymptomatic, atrophic modifications. AIM: The aim of the study was to histological and immunohistochemical evaluate samples of dental pulp selected from previously prepared teeth, which had been functioning as abutment teeth for some years. PATIENTS, MATERIALS AND METHODS: The starting point of the study was a statistical study conducted on a batch of 276 patients, of which 64 needed to change the fixed prosthetic restorations. Some of the existing abutment teeth were extracted, others presented previously performed root canal treatments and others required endodontic treatment. RESULTS: Of the 21 samples taken, 12 showed atrophic pulp modifications, represented by low cellularity, collagen fibrosis, vascular congestion, and pulpal calcifications. CONCLUSIONS: Certain irreversible atrophic changes can be observed in abutment teeth's pulps, a fact that justifies the need of performing pre-prosthetic endodontic treatment.
Subject(s)
Dental Abutments/adverse effects , Dental Pulp/pathology , Adult , Female , Humans , Immunohistochemistry , Male , Middle AgedABSTRACT
INTRODUCTION: Periapical granuloma is one of the most frequent periodontal pathology and belongs to the group named as apical periodontitis. MATERIALS AND METHODS: Out of 78 of diagnosed granulomas, we selected samples that we analyzed histologically and immunohistochemically. RESULTS: The histopathological aspect has been dominated by the presence of mononuclear cells of the lymphocyte and plasma cells type, showing the chronic aspect of the apical lesion. Also, we noticed that in the apical granuloma macrophages occur most often. This density of macrophages explains cellular and tissular disruption that occur in apical region of the tooth under the influence of bacterial flora that reached this area, as they have the role to phagocyte pathogens and cell and tissue residues that result from bacterial aggression. The reaction of the plasma cells, determined by their number, has been always associated with the age of the granulomas, and it is more intense in old, neglected granulomas, compared to recent granulomas. CONCLUSIONS: The number and type of immunity cells varies in the apical granuloma accordingly to the age of granuloma.
