Elsevier

Journal of Dentistry

Volume 38, Issue 3, March 2010, Pages 182-190
Journal of Dentistry

Review
Quantifying and qualifying surface changes on dental hard tissues in vitro

https://doi.org/10.1016/j.jdent.2010.01.002Get rights and content

Abstract

Introduction

Tooth surface loss (TSL) is an increasingly recognised problem. We are therefore seeing an increase in the number and complexity of in vitro studies investigating factors that modify effects at the tooth surface.

Aim

The aim of this paper is to provide a narrative review that illustrates the more commonly used in vitro methods (both historical and contemporaneous) that are available for measuring surface loss and surface change.

Method

An initial search (March 2009) was carried out using Scopus abstract and citation database with the keywords ‘dental’ AND ‘erosion OR abrasion’ ANDsurface change OR surface loss’ AND ‘vitro’ (1975–2009). This resulted in 69 papers which were reviewed and the methods critically appraised. Bibliographic material from the papers was then used in order to find other appropriate sources.

Results

It is clear that tooth surface change is a complex process that can be measured in a variety of ways. No single technique provides a comprehensive assessment of the remaining tooth surface, and each technique suffers its own limitations. What is also clear is that way in which surface change is reported by each of the techniques gives little information relating to how the surface may change in the immediate future.

Conclusion

Despite a variety of available in vitro tests for measuring surface changes, the roughness average (Ra) is still the main reported measurement within dental studies. Using the same set of profilometric data, it is proposed that additionally reporting bearing area parameters will allow a further and more meaningful description of the surface quality.

Introduction

Tooth surface loss (TSL) is an increasingly recognised problem.1 We are therefore seeing an increase in the number and complexity of in vitro studies investigating factors that modify effects at the tooth surface.2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 Often studies only quantify the amount of tooth loss; there are relatively few attempts to describe or qualify the remaining surface beyond descriptors such as hardness, or producing a visual representation of the sample surface. Quantified results are often considered fundamental in order to compare laboratory measurements. Surface quality is reported less often, but has the potential to account for particular surface characteristics that determine how future loss may progress. The aim of this paper is to provide a narrative review that illustrates the more commonly used in vitro methods (both historical and contemporaneous) that are available for measuring surface loss and surface change. Equally important are in vivo measurements, but discussion of these is not within the scope of this paper; they are reviewed elsewhere.31, 32

Section snippets

Data sources

An initial search (March 2009) was carried out using Scopus abstract and citation database with the keywords: ‘dental’ AND ‘erosion OR abrasion’ ANDsurface change OR surface loss’ ANDvitro’ (1975–2009). This resulted in 69 papers which were reviewed and the methods critically appraised. Bibliographic material from the papers was then used in order to find other appropriate sources.

The effects of scale

With direct visualisation33 of the tooth surface, accurate tissue loss is very difficult to determine. Even when tissue loss is identified, the remaining surface's textural characteristics cannot be accurately described. Clinically, more advanced techniques such as stereoimagery34 may provide a clearer, more accurate explanation of the patterns of surface loss. These techniques, however, still fail to qualify the surface change that occurs.

Micro- and nanoscopic techniques

Polarised light microscopy (PLM) was originally used

Bearing parameters

In 1933, Abbott and Firestone defined the ‘bearing area curve’.95 The bearing curve has been used to assess engineered surfaces in medicine96 (mainly that of femoral stem wear). Its use to monitor erosion was first mentioned in 199797 and, more recently, it has been used to describe the native enamel surface.98 The bearing curve represents the cumulative distribution of the lengths of individual plateaux, normalised by the total assessment length. If this ratio was plotted against sample

Discussion

It is clear that tooth surface change is a complex process that can be measured in a variety of ways. No single technique provides a comprehensive assessment of the remaining tooth surface, and each technique suffers its own limitations (whether that is sample destruction, the inability to assess certain characteristics of the remaining surface, or difficulty in interpreting the results). What is also clear is that way in which surface change is reported by each of the techniques gives little

Conclusion

Despite a variety of available in vitro tests for measuring surface changes, the roughness average (Ra) is still the main reported measurement within dental studies. Using the same set of profilometric data, it is proposed that additionally reporting bearing area parameters will allow a further and more meaningful description of the surface quality.

References (103)

  • J. Rees et al.

    Pronamel and tooth mousse: an initial assessment of erosion prevention in vitro

    Journal of Dentistry

    (2007)
  • M.J. Grenness et al.

    Mapping a non-carious cervical lesion using stereoimagery and dental casts incorporating optical texture

    Journal of Dentistry

    (2009)
  • V. Elton et al.

    Validation of enamel erosion in vitro

    Journal of Dentistry

    (2009)
  • N.X. West et al.

    A method to measure clinical erosion: the effect of orange juice consumption on erosion of enamel

    Journal of Dentistry

    (1998)
  • P. Anderson et al.

    Scanning microradiographic studies of rates of in vitro demineralization in human and bovine dental enamel

    Archives of Oral Biology

    (1998)
  • B. Willershausen et al.

    Prolonged in vitro exposure to white wines enhances the erosive damage on human permanent teeth compared with red wines

    Nutrition Research

    (2009)
  • A. Wiegand et al.

    TiF(4) and NaF at pH 1.2 but not at pH 3.5 are able to reduce dentin erosion

    Archives of Oral Biology

    (2009)
  • S.H.C. Sales-Peres et al.

    Effect of an iron mouthrinse on enamel and dentine erosion subjected or not to abrasion: an in situ/ex vivo study

    Archives of Oral Biology

    (2007)
  • M. Finke et al.

    The early stages of native enamel dissolution studied with atomic force microscopy

    Journal of Colloid and Interface Science

    (2000)
  • G.W. Marshall et al.

    Demineralization of caries-affected transparent dentin by citric acid: an atomic force microscopy study

    Dental Materials

    (2001)
  • S. Ranjitkar et al.

    The effect of casein phosphopeptide-amorphous calcium phosphate on erosive enamel and dentine wear by toothbrush abrasion

    Journal of Dentistry

    (2009)
  • R.G. Chadwick et al.

    Development of a novel system for assessing tooth and restoration wear

    Journal of Dentistry

    (1997)
  • J.F. McCabe et al.

    Two and three body wear of dental restorative materials

    International Dental Journal

    (2002)
  • J.R. Howell et al.

    In vivo surface wear mechanisms of femoral components of cemented total hip arthroplasties

    The Journal of Arthroplasty

    (2004)
  • E.B. Las Casas et al.

    Enamel wear and surface roughness characterization using 3D profilometry

    Tribology International

    (2008)
  • A.A. Torrance

    A simple datum for measurement of the Abbott of a profile and its first derivative

    Tribology International

    (1997)
  • M.E. Barbour et al.

    The role of erosion, abrasion and attrition in tooth wear

    Journal of Clinical Dentistry

    (2006)
  • A.M. Azevedo et al.

    Assessment in vitro of brushing on dental surface roughness alteration by laser interferometry

    Brazilian Oral Research

    (2008)
  • T. Gregg et al.

    A study in vitro of the abrasive effect of the tongue on enamel and dentine softened by acid erosion

    Caries Research

    (2004)
  • L.H. Hove et al.

    The erosion-inhibiting effect of TiF4, SnF2 and NaF solutions on pellicle-covered enamel in vitro

    Acta Odontologica Scandinavica

    (2007)
  • M. Eisenburger et al.

    Effect of time on the remineralisation of enamel by synthetic saliva after citric acid erosion

    Caries Research

    (2001)
  • M.L. Hunter et al.

    The effect of dilution on the in vitro erosive potential of a range of dilutable fruit drinks

    International Journal of Paediatric Dentistry

    (2008)
  • H. Pontefract et al.

    The erosive effects of some mouthrinses on enamel. A study in situ

    Journal of Clinical Periodontology

    (2001)
  • N.X. West et al.

    Erosion of dentine and enamel in vitro by dietary acids: the effect of temperature, acid character, concentration and exposure time

    Journal of Oral Rehabilitation

    (2000)
  • S. Wetton et al.

    The effect of saliva derived from different individuals on the erosion of enamel and dentine. A study in vitro

    Caries Research

    (2007)
  • S. Wetton et al.

    Exposure time of enamel and dentine to saliva for protection against erosion: a study in vitro

    Caries Research

    (2006)
  • N.X. West et al.

    The effect of pH on the erosion of dentine and enamel by dietary acids in vitro

    Journal of Oral Rehabilitation

    (2001)
  • M. Eisenberger et al.

    Erosion and attrition of human enamel in vitro. Part II. Influence of time and loading

    Journal of Dentistry

    (2002)
  • A. Wiegand et al.

    Impact of toothpaste slurry abrasivity and toothbrush filament stiffness on abrasion of eroded enamel – an in vitro study

    Acta Odontologica Scandinavica

    (2008)
  • A. Wiegand et al.

    Effect of olive oil and an olive-oil-containing fluoridated mouthrinse on enamel and dentin erosion in vitro

    Acta Odontologica Scandinavica

    (2007)
  • G.F. Ferrazzano et al.

    Protective effect of yogurt extract on dental enamel demineralization in vitro

    Australian Dental Journal

    (2008)
  • C. Poggio et al.

    Protective effect on enamel demineralization of a CPP-ACP paste: an AFM in vitro study

    Journal of Dentistry

    (2009)
  • L. Ramalingam et al.

    Adding casein phosphopeptide–amorphous calcium phosphate to sports drinks to eliminate in vitro erosion

    Pediatric Dentistry

    (2005)
  • M.A. Ablal et al.

    The erosive potential of some alcopops using bovine enamel: an in vitro study

    Journal of Dentistry

    (2009)
  • C. Piekarz et al.

    An in vitro assessment of the role of tooth mousse in preventing wine erosion

    Australian Dental Journal

    (2008)
  • A. Azzopardi et al.

    A literature review of the techniques to measure tooth wear and erosion

    European Journal of Prosthodontics and Restorative Dentistry

    (2000)
  • N. Schlueter et al.

    Evaluation of a profilometrical method for monitoring erosive tooth wear

    European Journal of Oral Sciences

    (2005)
  • Hooper SM. Development of a new toothwear index [MSc];...
  • A.-G. Gustafson

    A new method of microphotography of dental enamel in polarised light

    Acta Odontologica Scandinavica

    (1967)
  • B.M. Mor et al.

    Histopathology of artificial carious lesions produced by lactate buffers with additives

    Journal of Dental Research

    (1980)
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