Evaluation and prevention of enamel surface damage during dental restorative procedures

Milic, T., George, R. and Walsh, L. J. (2015) Evaluation and prevention of enamel surface damage during dental restorative procedures. Australian Dental Journal, 60 3: 301-308. doi:10.1111/adj.12230

Author Milic, T.
George, R.
Walsh, L. J.
Title Evaluation and prevention of enamel surface damage during dental restorative procedures
Journal name Australian Dental Journal   Check publisher's open access policy
ISSN 0045-0421
Publication date 2015-09
Sub-type Article (original research)
DOI 10.1111/adj.12230
Open Access Status Not Open Access
Volume 60
Issue 3
Start page 301
End page 308
Total pages 8
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell
Collection year 2016
Language eng
Formatted abstract
Background: This study examined the effect of operator experience, dominance, tooth position and access, on frequency and extent of iatrogenic damage to approximal tooth surfaces during conventional Class II cavity preparations, and the effectiveness of protective devices in minimising damage.

Methods: 10 students and 10 experienced dentists each prepared 24 Class II cavity preparations in typodont teeth without protection, 10 utilising stainless steel matrix bands and 10 utilising protective wedges. The frequency and extent of damage were analysed with respect to the above variables. Subsequently, 20 natural and 20 typodont teeth were utilised to establish the relationship in depth of damage caused by a high-speed diamond bur on typodont versus natural teeth.

Results: Dentists caused iatrogenic damage on 74% of approximal surfaces without protection, which fell to 50% and 46% respectively when matrix bands and wedges were used as guards. The corresponding rates of damage for students were 94%, 80% and 44%. There was no difference in depth of damage caused on the two types of teeth when bur was in contact with teeth for a very short time.

Conclusions: Greater operator experience and the use of guards reduces iatrogenic damage to proximal surfaces during preparation with high-speed rotary instruments.
Keyword Enamel damage
Approximal surface
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes [Epub ahead of print] PMID: 25283817

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Dentistry Publications
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Created: Wed, 18 Feb 2015, 16:34:31 EST by Professor Laurence Walsh on behalf of School of Dentistry