Recall intervals for oral health in primary care patients

Philip Riley; Helen V Worthington; Jan E Clarkson; Paul V Beirne

doi:10.1002/14651858.CD004346.pub4

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Figure 1

Study flow diagram.

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Figure 2

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.

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Analysis 1.1

Comparison 1 Clinical examination at 12 months versus clinical examination at 24 months, Outcome 1 Caries (dmfs/DMFS increment).

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Analysis 1.2

Comparison 1 Clinical examination at 12 months versus clinical examination at 24 months, Outcome 2 Total time (minutes).

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Summary of findings for the main comparison. Clinical examination at 12 months versus clinical examination at 24 months

Clinical examination at 12 months compared with clinical examination at 24 months for oral health
Patient or population: children and adults Settings: public dental clinic Intervention: clinical examination at 12 months Comparison: clinical examination at 24 months
Outcomes	*Illustrative comparative risks (95% CI)**		No of participants (studies)	Quality of the evidence (GRADE)
	Assumed risk	Corresponding risk
	12‐month recall	24‐month recall
Caries (dmfs/DMFS increment) ‐ 3‐5 year olds (primary teeth) Higher values represent worse caries Follow‐up: 2 years	The mean caries score in the 12‐month group was 0.9	The mean caries score in the 24‐month group was 0.9 higher (1.96 higher to 0.16 lower)	58 (1 study)	⊕⊝⊝⊝ very low^{1, 2, 3}
Caries (dmfs/DMFS increment) ‐ 16‐20 year olds (permanent teeth) Higher values represent worse caries Follow‐up: 2 years	The mean caries score in the 12‐month group was 0.79	The mean caries score in the 24‐month group was 0.86 higher (1.75 higher to 0.03 lower)	127 (1 study)	⊕⊝⊝⊝ very low^{1, 2, 3}
Total time (minutes) ‐ 3‐5 year olds (primary teeth) Higher values represent worse time/cost outcomes Follow‐up: 2 years	The mean total time used by each participant in the 12‐month group was 52 minutes	The mean total time used by each participant in the 24‐month group was 10 minutes lower (6.7 higher to 26.7 lower)	58 (1 study)	⊕⊝⊝⊝ very low^{1, 2, 3}
Total time (minutes) ‐ 16‐20 year olds (permanent teeth) Higher values represent worse time/cost outcomes Follow‐up: 2 years	The mean total time used by each participant in the 12‐month group was 86.2 minutes	The mean total time used by each participant in the 24‐month group was 23.7 minutes lower (4.12 lower to 43.28 lower)	127 (1 study)	⊕⊝⊝⊝ very low^{1, 2, 3}
CI: confidence interval; dmfs/DMFS: decayed, missing, filled surfaces
GRADE Working Group grades of evidence High quality: Further research is very unlikely to change our confidence in the estimate of effect. Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. Very low quality: We are very uncertain about the estimate.
¹ Single study at high risk of performance and detection bias with unclear methods of sequence generation and allocation concealment ² Only low risk participants who had previously received regular dental care, including health promotion and preventive services were included ³ Low sample size

Summary of findings for the main comparison. Clinical examination at 12 months versus clinical examination at 24 months

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Comparison 1. Clinical examination at 12 months versus clinical examination at 24 months

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Caries (dmfs/DMFS increment) Show forest plot	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected

1.1 3‐5 year olds (primary teeth)	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
1.2 16‐20 year olds (permanent teeth)	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
2 Total time (minutes) Show forest plot	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected

2.1 3‐5 year olds (primary teeth)	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]
2.2 16‐20 year olds (permanent teeth)	1		Mean Difference (IV, Fixed, 95% CI)	0.0 [0.0, 0.0]

Comparison 1. Clinical examination at 12 months versus clinical examination at 24 months

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