Computerized planimetric method for clinical plaque measurement

Söder, Per‐Östen; Li, Jin; Söder, Birgitta

doi:10.1111/j.1600-0722.1993.tb01640.x

Cited by 36 publications

(62 citation statements)

References 28 publications

(31 reference statements)

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“…Most clinical plaque indices measure a variable on an ordinal scale (ranked in an order and counted, ie 1,2,3, rather than measured), whereas an interval scale (measured as a difference between two units) is more powerful, providing more precise results and reducing clinical trial sizes 4 in addition to reducing subjectivity, increasing statistical strength and allowing better discrimination between similar products. Most clinical plaque indices yield ordinal data quickly, but are dependent upon a trained examiner's subjective evaluation 18 and a clinician to conduct examinations, increasing clinical trial costs.…”

Section: British Dental Journalmentioning

confidence: 99%

“…4,21 Numerous studies have found computerbased plaque assessment more reliable 2,4,6,22 and more objective than classic plaque indices. 22 This technique offers linear measurements, increased reproducibility, 4 increased objectivity 2 and increased discriminating power. 23 The technique also has good correlation with plaque weight, viable microbial counts and visual assessment.…”

Section: British Dental Journalmentioning

confidence: 99%

“…1 Methods for assessing plaque quantity have included dry or wet weight measurement, biochemical assays, oxygen consumption assays, microbiological counts and visual indices or planimetric assessments (area measurement) of plaque coverage or biofi lm thickness in situ. [2][3][4][5][6][7] Many scoring systems used for dentures have derived from studies on natural teeth, in which individual tooth plaque measurements have been used in Background Measurement and assessment of denture plaque can provide valuable information regarding an individual's oral health status and assessment of new treatments or products. Current methods tend to rely on subjective indices or image analysis derived planimetric (area measurement) assessment of stained plaque on dentures.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of in vivo denture plaque assessment methods

Coulthwaite

2009

Br Dent J

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epidemiological studies of periodontal disease. [8][9][10] For clinical trials with denture cleansing products however, a broader approach can be taken, in that scores per denture surface are suffi cient and appropriate to judge the effi cacy of products. Current methods tend to rely on subjective or image analysis derived estimates of area coverage of dentures by stained plaque. 5,7,[11][12][13] For denture plaque assessment most methods assess plaque coverage by staining with a disclosing agent, most commonly erythrosine. Budtz-Jörgensen and Bertram 11 proposed a simple index to grade plaque coverage on the denture fi tting surface: excellent -none or only a few spots of plaque; fair -<50% denture base covered; and poor ->50% denture base covered. A slightly more sensitive method was described in 1978 14 where the amount of denture plaque on the fi tting surface was graded 0 = non-visible, 1 + = less than one third covered, 2 + = one third to two thirds covered, and 3 + = more than two thirds covered. Augsberger and Elahi 12 developed a well-used index for INTRODUCTIONMeasurement and assessment of denture plaque can provide valuable information regarding oral health status associated with denture wearing and assessment of new treatments or products. The potential pathogenic aspects of denture plaque have been recently reviewed. 1 Methods for assessing plaque quantity have included dry or wet weight measurement, biochemical assays, oxygen consumption assays, microbiological counts and visual indices or planimetric assessments (area measurement) of plaque coverage or biofi lm thickness in situ.2-7 Many scoring systems used for dentures have derived from studies on natural teeth, in which individual tooth plaque measurements have been used in Background Measurement and assessment of denture plaque can provide valuable information regarding an individual's oral health status and assessment of new treatments or products. Current methods tend to rely on subjective indices or image analysis derived planimetric (area measurement) assessment of stained plaque on dentures. Plaque indices are most commonly used to assess plaque coverage without image capture. This is not ideal because the methods are subjective, examiner bias may occur, there is no reproducibility between studies, the methods have lower accuracy and sensitivity than image analysis, and there is no record. To the authors' knowledge, no standardised published method of denture plaque assessment is currently employed for product development and testing. Method In this study visual and planimetric plaque assessment methods were compared using reference dentures. In addition, an in vivo study compared these methods for evaluating denture cleanser effi cacy. Results and conclusions The results show that blinded image scoring is more representative of the true plaque area coverage than 'live' denture scoring, detecting signifi cant decreases in plaque coverage. Planimetric analysis provides a more sensitive and less subjective technique with greater differentia...

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Section: British Dental Journalmentioning

confidence: 99%

Section: British Dental Journalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of in vivo denture plaque assessment methods

Coulthwaite

2009

Br Dent J

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“…The area of plaque was given as a percentage of the total buccal surface just like it was done in the present study. We used a computer program to calculate the percentage of the plaque covered teeth surfaces from digital photographs similar to Söder et al and Eaton et al [26,27] . Further, Renton-Harper et al stated advantage of recording digital photographs as they are permanent records that can be re-evaluated at any point of time, and can later be transferred into other index scores; which helps in an easier comparison with other studies.…”

Section: Discussionmentioning

confidence: 99%

The Plaque Inhibitory Effect of Aloe Vera Mouthrinse in A Four Day De Novo Plaque Formation Model- A Randomized, Double Blind Crossover Study

Daing¹,

Sawai²,

Bhardwaj³

et al. 2016

IOSR

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“…[19][20][21] The ability to measure, although indirectly, plaque area within an objective planimetric system would be of advantage to researchers investigating plaque reduction following interventions. 22 The QLF technique may offer such measurement opportunities.…”

Section: Use Of Qlf As a Planimetric Devicementioning

confidence: 99%

A study to assess the efficacy of a new detergent free, whitening dentifrice in vivo using QLF planimetric analysis

2004

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Objective To determine the effects of a detergent-free, whitening dentifrice using an in vivo plaque regrowth model with the novel application of QLF as a planimetric analysis tool. Method A total of 20 subjects took part in a double blind, singlecentre, crossover study in which slurry rinses were the only form of plaque control over a 5-day period. Following a washout and prophylaxis the subjects used 2 daily rinses in the absence of all other plaque control methods. Subjects returned to the clinic on the afternoon of day 5 when plaque was disclosed and assessed by the plaque index and area using both a photographic and novel fluorescent planimetric technique. A further 9-day washout was carried out and the rinse period repeated to ensure that each subject had used both experimental and comparator slurries. Results Twenty subjects completed the trial. The test product showed a significant inhibition of plaque re-growth (16.9%) compared with a fluoride-matched comparator using the Turesky index (P < 0.0001), the photographic planimetric technique (17.5%) (P < 0.0001) and the novel QLF technique (18.4%) (P < 0.0001). Conclusion The results confirm that plaque inhibition capability of a detergent-free whitening dentifrice is at least as effective as a fluoride matched comparator. QLF is a promising tool for disclosed plaque quantification.

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Computerized planimetric method for clinical plaque measurement

Cited by 36 publications

References 28 publications

Evaluation of in vivo denture plaque assessment methods

Evaluation of in vivo denture plaque assessment methods

The Plaque Inhibitory Effect of Aloe Vera Mouthrinse in A Four Day De Novo Plaque Formation Model- A Randomized, Double Blind Crossover Study

A study to assess the efficacy of a new detergent free, whitening dentifrice in vivo using QLF planimetric analysis

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