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[Cervical wedge-shaped lacunae and dentin hypersensitivity--a histological and SEM study]
1Département de Prévention et Thérapeutique, Université de Genève, Faculté de Medecine.
Schweizer Monatsschrift Fur Zahnmedizin = Revue Mensuelle Suisse D'Odonto-Stomatologie = Rivista Mensile Svizzera Di Odontologia E Stomatologia
|January 1, 1990
Summary
Dentinal hypersensitivity is linked to open dentinal tubules at cervical abrasions, even with reparative dentin. Non-abrasive oral hygiene is crucial for preserving tooth structure.
Area of Science:
- Dental Science
- Histology
- Biomaterials
Context:
- Cervical abrasions are common dental defects.
- Understanding pulp-dentinal complex response is vital for managing sensitivity.
- Existing treatments for dentinal hypersensitivity have limitations.
Purpose:
- To investigate the relationship between dentinal hypersensitivity and microscopic changes in the pulp-dentinal complex.
- To analyze histological and ultrastructural modifications at cervical abrasion sites.
- To determine the role of dentinal permeability in hypersensitivity.
Summary:
- Histological and SEM analysis of 65 human teeth with cervical abrasions revealed open dentinal tubules in 83.3% of samples.
- Cytoplasmic processes were observed in 78.46% of cases, irrespective of tooth age or abrasion depth.
- Cervical dentinal permeability appears to be a primary factor in hypersensitivity, susceptible to various irritants.
Impact:
- Findings highlight the persistent vulnerability of dentin to irritation, even with secondary dentin formation.
- Emphasizes the need for effective tubule-sealing agents.
- Recommends non-abrasive hygiene methods to maintain cervical tissue integrity and manage dentinal hypersensitivity.