Non-Cochrane · aetiology · PM36294037

Does Early Childhood Caries Increase Caries Development among School Children and Adolescents? A Systematic Review and Meta-Analysis.

Lam Phoebe Pui Ying, Chua Helene, Ekambaram Manikandan, et al. · International journal of environmental research and public health · 2022 · PubMed · doi:10.3390/ijerph192013459

Oral HealthDental cariesAMSTAR 2: not applicable
Full textEvery question was extracted from the full text, figures and supplements by two independent LLM extractors, disagreements adjudicated. Rows cite where in the review the value comes from.
Questions
11
current version
GRADE rated
2
No studies
0
Included studies
10
linked below
No studies 0 · 0%Ungraded 9 · 81.8%Very low 1 · 9.1%Low 1 · 9.1%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Review question

ElementPlanned (methods)Found (results)
PopulationSchool children and adolescents (6-18 years) with mixed or permanent dentition, examined at least once at a baseline below 72 months of age; children with disabilities or outside the age range excludedSchool children and adolescents; 7580 children at baseline (1.5-5 years old with primary dentition), followed to 6-14 years; 6786 subjects at follow-up (n=10 studies)
InterventionEarly childhood caries (caries in primary dentition) and other potential risk factors (parental socioeconomic position, dietary and oral health behavioural habits, other oral conditions)Early childhood caries; caries depth/severity; caries location; gender; sociodemographic factors; oral hygiene/dietary habits; bacterial load (n=10 studies)
ComparisonAbsence of the exposure (e.g., caries-free primary dentition / reference category)Caries-free primary dentition / reference category
OutcomesPrimary: increment of caries in permanent teeth (DMFT/DMFS index or ICDAS scores); Secondary: proportion of children developing new caries in permanent dentitionCaries in permanent teeth (OR, RR, DMFT/DMFS); pooled for past caries experience (3 studies) and gender (2 studies)
Study designsProspective and retrospective cohort or case-control studies with at least 24 months of follow-up10 cohort studies (9 prospective, 1 retrospective)
TimingAt least 24 months of follow-upFollow-up 3 to 12 years

Search date: Inception to 28 July 2022 (grey literature accessed 14 September 2022). Databases: PubMed, Ovid Medline, Ovid Embase, Web of Science (grey literature: OpenGrey, Google Scholar; reference lists hand-searched)

Questions and results

Early childhood caries (caries present in primary dentition) vs No caries in primary dentition (caries-free)

Population: School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)
1 question
OutcomeEffectEvidenceStatus / GRADE
Caries development in permanent teeth
At least 24 months follow-up (3-12 years)
Early childhood caries increases the likelihood of caries in permanent teeth roughly three-fold, but the certainty of evidence is very low (OR 3.22, 95% CI 2.80 to 3.71).
Source: Figure 3 (forest plot); Table 2 (GRADE SoF); Results 3.4.1; Abstract · same question in other reviews
OR 3.22 [2.80, 3.71]3 studies · 5080 participantsVery low
Downgraded: risk of bias, inconsistency

Male sex (boys) vs Female sex (girls)

Population: School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)
1 question
OutcomeEffectEvidenceStatus / GRADE
Caries development in permanent teeth
At least 24 months follow-up · Gender (boys vs girls)
Gender is not associated with caries development in permanent teeth (OR 0.86, 95% CI 0.71 to 1.02; low certainty).
Source: Figure 4 (forest plot); Table 2 (GRADE SoF); Results 3.4.4, 3.5 · same question in other reviews
OR 0.86 [0.71, 1.02]2 studies · 2045 participantsLow

Dentinal caries in primary dentition (at 5 years) vs Caries-free primary dentition

Population: School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)
2 questions
OutcomeEffectEvidenceStatus / GRADE
Dentinal caries in permanent (newly erupted) teeth
7-year follow-up · Dentinal caries in primary dentition
Dentinal caries in the primary dentition is associated with about 3.2 times higher odds of dentinal caries in permanent teeth (single study; not GRADE-rated).
Source: Results 3.4.2 · same question in other reviews
OR 3.2 [2.6, 3.9]1 study · 3282 participantsUngraded
Dentinal caries in permanent (newly erupted) teeth
7-year follow-up · Enamel caries in primary dentition
Enamel caries in the primary dentition is associated with about 1.6 times higher odds of dentinal caries in permanent teeth (single study; not GRADE-rated).
Source: Results 3.4.2 · same question in other reviews
OR 1.6 [1.2, 2.0]1 study · 3282 participantsUngraded

Primary dentition DMFT score 1-3 vs No caries in primary teeth (DMFT = 0)

Population: School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)
2 questions
OutcomeEffectEvidenceStatus / GRADE
Caries prevalence in permanent dentition
7-year follow-up · Primary DMFT 1-3
A primary-dentition DMFT of 1-3 is associated with 1.5 times higher risk of caries in permanent teeth (single study; not GRADE-rated).
Source: Results 3.4.2 · same question in other reviews
RR 1.5 [1.3, 1.8]1 study · 1683 participantsUngraded
Caries prevalence in permanent dentition
7-year follow-up · Primary DMFT over 13
A primary-dentition DMFT over 13 is associated with about 15 times higher risk of caries in permanent teeth (single study; not GRADE-rated).
Source: Results 3.4.2 · same question in other reviews
RR 15.2 [7.5, 30.8]1 study · 1683 participantsUngraded

Caries in first and second primary molars vs Reference (other primary tooth locations / caries-free)

Population: School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)
2 questions
OutcomeEffectEvidenceStatus / GRADE
Caries development in permanent teeth
8-year follow-up · First and second primary molars
Caries in the first and second primary molars is the strongest tooth-specific predictor of caries in permanent teeth (RR 3.4; single study; not GRADE-rated).
Source: Results 3.4.3 · same question in other reviews
RR 3.4 [1.8, 6.1]1 study · 362 participantsUngraded
Caries development in permanent teeth
8-year follow-up · Upper incisors
Caries in upper primary incisors has the lowest tooth-specific predictive value for permanent-teeth caries (RR 1.6; single study; not GRADE-rated).
Source: Results 3.4.3 · same question in other reviews
RR 1.6 [1.07, 2.45]1 study · 362 participantsUngraded

Sociodemographic / socioeconomic factors (single-parent family, low parental education, family income, socioeconomic status) vs Absence of the factor / reference socioeconomic category

Population: School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)
1 question
OutcomeEffectEvidenceStatus / GRADE
Caries increment in permanent teeth
Evidence on the association between sociodemographic/socioeconomic factors and permanent-teeth caries is weak and inconsistent (3 studies; could not be pooled; not GRADE-rated).
Source: Results 3.4.5 · same question in other reviews
Inconsistent findings across studies; meta-analysis could not be performed as data could not be extracted. Single-parent family and low parental education were significant in one study (Saethre-Sundli 2020); higher…3 studiesUngraded

Unfavourable oral hygiene and dietary habits (frequent sweet/sugar consumption; low toothbrushing frequency in early childhood) vs Favourable oral hygiene and dietary habits

Population: School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)
1 question
OutcomeEffectEvidenceStatus / GRADE
Caries development in permanent teeth
Early-childhood oral hygiene and dietary habits show inconsistent associations with permanent-teeth caries, often losing significance after adjustment for past caries (2 studies; not pooled; not GRADE-rated).
Source: Results 3.4.6 · same question in other reviews
Two studies reported associations; frequent sweet consumption and lower toothbrushing frequency in early childhood were associated with higher caries prevalence/severity in adolescence, but these behaviours were not…2 studiesUngraded

High Streptococcus mutans colonization in primary dentition (age 2-3 years) vs Lower Streptococcus mutans load

Population: School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)
1 question
OutcomeEffectEvidenceStatus / GRADE
Caries (DMFT/DMFS) in mixed/permanent dentition
Higher early Streptococcus mutans colonization is associated with more caries in the mixed/permanent dentition (2 studies; not pooled; not GRADE-rated).
Source: Results 3.4.7 · same question in other reviews
Two studies found a significantly higher DMFT/DMFS score among school children aged 6-12 years who had a higher Streptococcus mutans load at 2-3 years old2 studiesUngraded

Included primary studies 10

Open as a trial list
StudyAlso included byOutcomes it informs hereTrial PICOResults
Saethre-Sundli et al., 2020
Do enamel and dentine caries at 5 years of age predict caries development in newly erupted teeth? A prospective longitudinal study
DOI:10.1080/00016357.2020.1739330
1 other reviewCaries development in permanent teethnot extracted yetnot extracted yet
Al-Shalan et al., 1997
matched by author and year (probable)
this review onlyCaries development in permanent teethnot extracted yetnot extracted yet
Alm et al., 2012
Caries in adolescence – influence from early childhood
DOI:10.1111/j.1600-0528.2011.00647.x
this review onlynot statednot extracted yetnot extracted yet
Chankanka et al., 2011
Longitudinal associations between children's dental caries and risk factors.
PMID:22320287
this review onlynot statednot extracted yetnot extracted yet
Cortellazzi et al., 2013
DOI:10.3290/j.ohpd.a30480
this review onlynot statednot extracted yetnot extracted yet
Du et al., 2017
Permanent caries experience is associated with primary caries experience: a 7‐year longitudinal study in China
DOI:10.1111/cdoe.12257
this review onlynot statednot extracted yetnot extracted yet
Li & Wang, 2002
Predicting Caries in Permanent Teeth from Caries in Primary Teeth: An Eight-year Cohort Study
DOI:10.1177/154405910208100812
this review onlyCaries development in permanent teethnot extracted yetnot extracted yet
Skeie et al., 2006
The relationship between caries in the primary dentition at 5 years of age and permanent dentition at 10 years of age – a longitudinal study
DOI:10.1111/j.1365-263x.2006.00720.x
this review onlynot statednot extracted yetnot extracted yet
Straetemans et al., 1998
Colonization with Mutans Streptococci and Lactobacilli and the Caries Experience of Children after the Age of Five
DOI:10.1177/00220345980770101301
this review onlynot statednot extracted yetnot extracted yet
Thibodeau et al., 1999
Salivary mutans streptococci and caries development in the primary and mixed dentitions of children
DOI:10.1111/j.1600-0528.1999.tb02039.x
this review onlynot statednot extracted yetnot extracted yet

Overlap with other reviews

Reviews that include the same primary studies are not independent evidence. Shared counts match studies by PMID, DOI or NCT, and otherwise by author and year (a probable match).