Open Daily: 10am - 10pm | Alley door pickup 10am - 7pm 3038 Hennepin Ave Minneapolis, MN
612-822-4611

  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Smear Layer

Smear Layer

Fernandes, Anisha M.

Paperback

Medical Reference

ISBN10: 6208454824
ISBN13: 9786208454821
Publisher: LAP Lambert Academic Publishing
Published: Oct 27 2025
Pages: 180
Weight: 0.55
Height: 0.41 Width: 6.00 Depth: 9.00
Language: English
The smear layer is a thin, amorphous layer of debris composed of dentin collagen, hydroxyapatite crystals, and microbial remnants that forms on tooth surfaces during cavity preparation with rotary instruments. It typically obstructs dentinal tubules (1-5 μm deep) and reduces dentin permeability by 86%, acting as both a mechanical barrier and potential substrate for bacterial growth. While it may provide short-term occlusion of tubules and decrease sensitivity, its interference with bonding (reducing adhesive strength by 30-50%) makes removal/modification essential for durable restorations. Common smear layer management approaches include total etch (phosphoric acid) for complete removal, self-etch adhesives for partial dissolution/integration or EDTA or citric acid in endodontics. Its dual nature-protective vs. adhesive-inhibiting-remains a key consideration in restorative and endodontic procedures. This book focuses on the structural, physiological and bacterial considerations of smear layer and the controversy of smear layer- to retain or to remove?

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