Non-Cochrane · intervention · PM39397759

Can Orthodontic Adhesive Systems Inhibit the Formation and Development of White Spot Lesions During Fixed Orthodontic Treatment? A Systematic Review.

El Helou Marwan, Chakar Sandra, Nicolas Emmanuel, et al. · The journal of adhesive dentistry · 2024 · PubMed · doi:10.3290/j.jad.b5781299

Oral HealthDental cariesOrthodonticsAMSTAR 2: High / Low (extractors disagree)
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
33
current version
GRADE rated
0
No studies
0
Included studies
12
linked below
No studies 0 · 0%Ungraded 33 · 100%Very low 0 · 0%Low 0 · 0%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)
PopulationHumans undergoing fixed orthodontic treatment; only in-vivo studies and clinical trials on humans (in-vitro, animal, and non-clinical/observational designs excluded)12 studies; 550 participants (ages 12 to 35); more than 2,000 teeth/tooth surfaces
InterventionOrthodontic bonding systems (adhesives, primers, bonding techniques), including nanoparticle- and fluoride-modified materialsnCaF2 primer; ACP adhesive; TiO2/chitosan nanoparticle adhesives; RM-GIC; fluoride-releasing primers (Opal Seal, Clearfil Protect Bond); one-step self-adhesive resin (GC Ortho Connect); indirect bonding with flowable composite; adhesive precoated flash-free brackets
ComparisonConventional bonding systems / adhesives / primersConventional primers/adhesives (Transbond XT / Transbond primer); direct bonding; conventional brackets
OutcomesPrimary: efficacy of orthodontic bonding systems in preventing white spot lesions. Secondary: WSL occurrence/prevalence; participant characteristics; intervention characteristicsWhite spot lesions / enamel demineralization (DIAGNOdent, QLF, micro-CT, photographic scoring); Streptococcus mutans counts; bracket bond-failure rates
Study designsIn-vivo studies and clinical trials on humans (RCTs assessed with RoB2 and non-randomized studies of interventions assessed with ROBINS-I)RCTs (single-/multicenter; double-/triple-blind; split-mouth; parallel) and non-randomized studies (prospective clinical, in-vivo) (n=12; 8 RCTs and 4 non-randomized)
TimingNot specified (during fixed orthodontic treatment)Follow-up varied (about 8 weeks to 6 months)

Search date: October 2023. Databases: PubMed/MEDLINE; Cochrane Library (including CENTRAL); EM Premium

Questions and results

nCaF2 primer vs Control Transbond primer

Population: Patients undergoing fixed orthodontic treatment
4 questions
OutcomeEffectEvidenceStatus / GRADE
Photographic white spot lesion score
Before and after treatment
nCaF2 primer showed no clinical photographic WSL difference at debonding, with certainty not graded.
No significant differences in the WSLs photographic scores of the control group with the contralateral nCaF2 group before and after bonding.1 study · 31 participantsUngraded
Enamel demineralization / white spot lesions (DIAGNOdent, photographic scoring)
1, 3 and 6 months (during treatment to debonding)
Population: Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35)
A single small split-mouth RCT found the nCaF2-containing primer reduced demineralization (DIAGNOdent) but showed no significant clinical white spot lesion difference at debonding (ungraded).
Source: Table 1 (Al Tuma 2023); Results (Effective in reducing WSLs); Discussion (Calcium fluoride nanoparticle primer) · same question in other reviews
Al Tuma 2023 (1 split-mouth RCT, 31 patients / 310 teeth): DIAGNOdent scores significantly favored the nCaF2 primer at 1, 3 and 6 months (p=0.000) and S. mutans count differed at 1 month; no significant difference in…1 study · 31 participantsUngraded
Enamel demineralization (DIAGNOdent score)
1, 3, and 6 months after bonding
nCaF2 primer favored lower demineralization scores, but certainty was not graded.
Statistically significant scores in favor of the nCaF2 primer at T1, T3, and T6 (p-value = 0.000).1 study · 31 participantsUngraded
Streptococcus mutans count
1, 3, and 6 months after bonding
nCaF2 primer differed in S. mutans count only at T1, with certainty not graded.
Statistically significant difference in bacterial count between the two primers only at T1 (p-value = 0.000).1 study · 31 participantsUngraded

Amorphous calcium phosphate (ACP)-containing light-cure adhesive vs Conventional adhesive (Transbond XT)

Population: Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35)
3 questions
OutcomeEffectEvidenceStatus / GRADE
Enamel demineralization (DIAGNOdent)
1 and 6 months
A single triple-blinded RCT found the ACP-containing adhesive reduced enamel demineralization versus a conventional adhesive over 6 months (ungraded).
Source: Table 1 (Alshammari 2019); Results (Effective in reducing WSLs); Discussion (Amorphous calcium phosphate adhesives) · same question in other reviews
Alshammari 2019 (1 triple-blinded RCT, 26 patients / 255 teeth): DIAGNOdent demineralization scores were lower with ACP than control at 1 month (2.58 +/-1.11 vs 3.39 +/-1.29) and 6 months (3.41 +/-1.11 vs 4.32…1 study · 26 participantsUngraded
Enamel demineralization score
6 months after bonding
Population: Patients undergoing fixed orthodontic treatment
ACP adhesive had lower demineralization scores at 6 months, with certainty not graded.
At T2, the control group had an average score of 4.32 (±2.32), while the ACP group continued to exhibit a lower average score of 3.41 (±1.11) (p-value of 0.000).1 study · 26 participantsUngraded
Enamel demineralization score
1 month after bonding
Population: Patients undergoing fixed orthodontic treatment
ACP adhesive had lower demineralization scores at 1 month, with certainty not graded.
At T1, the control group had an average demineralization score of 3.39 (±1.29), whereas the ACP group had a notably lower average score of 2.58 (±1.11) (p-value of 0.000).1 study · 26 participantsUngraded

Indirect bonding with flowable adhesive (Opal Bond MV) vs Direct bonding with Transbond XT

Population: Patients undergoing fixed orthodontic treatment
2 questions
OutcomeEffectEvidenceStatus / GRADE
White spot lesion formation measured by QLF
Before and after treatment
Indirect bonding with a flowable adhesive favored less QLF-measured demineralization, with certainty not graded.
The DB group exhibited significantly higher loss of fluorescence and degree of demineralization compared to the IB group between T0 and T1, with notable differences in specific quadrants (p <0.05 for ΔF and ΔF max).1 study · 51 participantsUngraded
White spot lesion formation (QLF: fluorescence loss, lesion area)
Before and after treatment (T0 to T1)
Population: Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35)
A single RCT found indirect bonding with flowable composite reduced white spot lesion formation versus direct bonding (ungraded).
Source: Table 1 (Atilla 2020); Results (Effective in reducing WSLs); Discussion (Indirect bonding with flowable composites) · same question in other reviews
Atilla 2020 (1 single-blind parallel RCT, 51 patients): the direct-bonding group had significantly greater loss of fluorescence and demineralization and larger lesion areas than the indirect-bonding (flowable…1 study · 51 participantsUngraded

Light-cured resin-modified glass ionomer cement vs Resin adhesive (Transbond XT)

Population: Patients undergoing fixed orthodontic treatment
2 questions
OutcomeEffectEvidenceStatus / GRADE
First-time bracket failure
Before and after treatment
Resin-modified glass ionomer cement showed no difference in first-time bracket failure, with certainty not graded.
No differences were observed in the proportions of patients experiencing first-time bracket failures when participants were bonded with either resin adhesive or RM-GIC (p > 0.05).1 study · 197 participantsUngraded
New white spot lesion incidence (and first-time bracket bond failure)
During fixed appliance treatment
Population: Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35)
A single multicenter RCT found resin-modified glass-ionomer cement did not reduce new white spot lesions or bond failures versus conventional composite (ungraded).
Source: Table 1 (Benson 2019); Results (Similar effects); Discussion (Resin-modified glass ionomer) · same question in other reviews
Benson 2019 (1 multicenter single-blind RCT, 197 patients): no difference in the proportion of patients with new WSLs or first-time bracket failures between RM-GIC and resin adhesive (p>0.05). No meta-analysis performed.1 study · 197 participantsUngraded

Fluoride-releasing primers/adhesives (Opal Seal; Clearfil Protect Bond) vs Conventional primer/adhesive (Transbond XT)

Population: Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35)
5 questions
OutcomeEffectEvidenceStatus / GRADE
White spot lesions / enamel demineralization (photographic scoring, DIAGNOdent, micro-CT)
8 weeks to full treatment (to debonding)
Across three small non-randomized studies, fluoride-releasing primers (Opal Seal, Clearfil) showed no consistent clinical advantage over conventional primers in preventing white spot lesions (ungraded).
Source: Table 1 (Comert 2020; Oz 2019; Oz 2017); Results (Similar effects); Discussion (Fluoride-releasing primers) · same question in other reviews
Three non-randomized studies (Comert 2020 n=56; Oz 2019 n=35; Oz 2017 n=15) showed no consistent clinical advantage. Comert: no significant difference in photographic WSL severity or area, although DIAGNOdent favored…3 studies · 106 participantsUngraded
White spot lesion area
During orthodontic treatment
Population: Patients undergoing fixed orthodontic treatment
Opal Seal showed no significant difference in WSL area, with certainty not graded.
There was no significant difference in the WSL area between the two groups, with the mean WSL area measuring 161.3 mm2 in the Opal Seal group and 1361.2 mm2 in the conventional group.1 study · 56 participantsUngraded
DIAGNOdent white spot lesion measurement
During orthodontic treatment
Population: Patients undergoing fixed orthodontic treatment
Opal Seal had fewer DIAGNOdent-measured lesions, with certainty not graded.
Opal Seal group showed fewer WSLs compared to the Transbond group, with initial demineralization rates of 1.3% and 3.9%, and caries lesion rates of 0.2% and 1.3%, respectively (p <0.03).1 study · 56 participantsUngraded
Photographic white spot lesion severity
During orthodontic treatment
Population: Patients undergoing fixed orthodontic treatment
Opal Seal showed no difference in photographic WSL severity, with certainty not graded.
WSL severity in digital photographs: no significant difference between the two groups (p >0.05).1 study · 56 participantsUngraded
Bracket failure
During orthodontic treatment
Population: Patients undergoing fixed orthodontic treatment
Opal Seal showed no difference in bracket failure, with certainty not graded.
No significant differences were observed in bracket failure rates among different primers, dental arches, bracket types, or sexes.1 study · 56 participantsUngraded

Antibacterial S. mutans reduction only in Farzanegan (chitosan+TiO2); Mollabashi (TiO2-only) showed no significant antibacterial effect - not attributable to TiO2 alone vs Conventional adhesive/composite (Transbond XT)

Population: Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35)
4 questions
OutcomeEffectEvidenceStatus / GRADE
Antibacterial effect (Streptococcus mutans count, real-time PCR)
1 day to 6 months · Antibacterial (S. mutans)
The antibacterial (S. mutans) effect of TiO2 nanoparticles was conflicting across two RCTs (ungraded).
Source: Table 1 (Farzanegan 2021; Mollabashi 2022); Results (Mixed results); Discussion (TiO2 nanoparticles) · same question in other reviews
Two RCTs gave conflicting antibacterial results: Farzanegan 2021 reported a significant decrease in S. mutans with the chitosan plus TiO2 adhesive (p=0.01 lateral incisors; p=0.001 second premolars); Mollabashi 2022…2 studies · 64 participantsUngraded
Enamel demineralization / white spot lesion prevention (DIAGNOdent, enamel mineral content)
1 day to 6 months
Two small RCTs gave inconsistent results for TiO2-modified adhesives/composites on enamel demineralization (one favorable on DIAGNOdent, one no difference in mineral content); ungraded.
Source: Table 1 (Farzanegan 2021; Mollabashi 2022); Results (Mixed results); Discussion (TiO2 nanoparticles) · same question in other reviews
Two RCTs (Farzanegan 2021 n=24; Mollabashi 2022 n=40): Mollabashi reported DIAGNOdent readings significantly lower on the TiO2 side than the control side (p<0.001); Farzanegan reported no significant difference in…2 studies · 64 participantsUngraded
Streptococcus mutans count
1 day, 2 months, and 6 months after bonding
Population: Patients undergoing fixed orthodontic treatment
Chitosan and TiO2 adhesive reduced S. mutans counts, with certainty not graded.
Experimental group: significant decrease in S. mutans count was observed at the time points of 1 day, 2 months, and 6 months for both maxillary lateral incisor (p = 0.01) and maxillary second premolar teeth (p = 0.001).1 study · 24 participantsUngraded
Enamel mineral content
1 day, 2 months, and 6 months after bonding
Population: Patients undergoing fixed orthodontic treatment
Chitosan and TiO2 adhesive showed no enamel mineral-content difference, with certainty not graded.
There were no significant differences in enamel mineral content between the experimental group and control group at all time points.1 study · 24 participantsUngraded

TiO2-modified composite (1 wt.%) vs Control composite in contralateral quadrant

Population: Patients undergoing fixed orthodontic treatment
3 questions
OutcomeEffectEvidenceStatus / GRADE
Streptococcus mutans population
1 to 6 months after bonding
TiO2-modified composite showed no S. mutans difference, with certainty not graded.
No statistically significant difference between the S. mutans populations on the control and test sides at any time point.1 study · 40 participantsUngraded
White spot lesion development (QLF: mineral loss, lesion area/depth, new lesions)
2 and 4 months
Population: Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35)
A single RCT found the one-step adhesive without a primer (GC Ortho Connect) produced more and more severe white spot lesions than conventional multi-step systems (ungraded).
Source: Table 1 (Horan 2023); Results (Ineffective in reducing WSLs); Discussion (Self-adhesive orthodontic resin GC Ortho Connect) · same question in other reviews
Horan 2023 (1 three-arm RCT, 75 patients): the one-step adhesive without primer (GC Ortho Connect) had a significantly higher WSL incidence and larger, deeper lesions than both the three-step and self-etch systems…1 study · 75 participantsUngraded
Enamel demineralization (DIAGNOdent score)
1 to 6 months after bonding
TiO2-modified composite favored lower DIAGNOdent scores, with certainty not graded.
Mean readings were significantly greater on the control side than on the experimental side (p < 0.001) at all time points except at baseline.1 study · 40 participantsUngraded

Self-etch primer bonding system (3M Transbond Plus) vs Conventional three-step bonding system (3M Transbond XT)

Population: Patients undergoing fixed orthodontic treatment
2 questions
OutcomeEffectEvidenceStatus / GRADE
White spot lesion incidence
2 and 4 months after treatment start
The self-etch primer system had higher WSL incidence than the conventional system, with certainty not graded.
Group 2 (3M Transbond Plus) had a significantly higher incidence of WSLs than Group 1 (3M Transbond XT) (p <0.05).1 study · 75 participantsUngraded
Enamel demineralization / white spot lesions (DIAGNOdent, QLF)
1 to 6 months (to debonding)
Population: Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35)
Two studies found adhesive flash-free brackets did not clinically reduce enamel demineralization or white spot lesions versus conventional brackets, though they reduced pathogenic bacteria (ungraded).
Source: Table 1 (Tan 2020; Yetkiner 2019); Results (Similar effects); Discussion (Adhesive precoated flash-free brackets) · same question in other reviews
Two studies (Tan 2020 split-mouth, n=30; Yetkiner 2019 RCT, n=50): no statistically significant difference in demineralization between flash-free and conventional/APC brackets (Tan p>0.05; Yetkiner delta-F not…2 studies · 80 participantsUngraded

One-step adhesive bonding system (GC Ortho Connect) vs Conventional three-step bonding system (3M Transbond XT)

Population: Patients undergoing fixed orthodontic treatment
1 question
OutcomeEffectEvidenceStatus / GRADE
White spot lesion incidence, area, and depth
2 and 4 months after treatment start
GC Ortho Connect had more frequent, larger, and deeper WSLs, with certainty not graded.
Group 3 (GC Ortho Connect) showed a significantly higher incidence than both groups (p < 0.001). Group 3 (GC Ortho Connect) also had larger lesion areas and deeper lesions compared to other groups (p < 0.001).1 study · 75 participantsUngraded

Clearfil Protect Bond antibacterial fluoride-releasing primer vs Transbond XT conventional primer

Population: Patients undergoing fixed orthodontic treatment
2 questions
OutcomeEffectEvidenceStatus / GRADE
White spot lesion incidence
Before and after orthodontic treatment
Clearfil Protect Bond showed no difference in WSL incidence, with certainty not graded.
The incidence of WSLs in the Clearfil (CF) group was 8.03%, while in the Transbond (TB) group, it was 9.24% with no significant difference (p = 0.82).1 study · 35 participantsUngraded
Bracket failure
During orthodontic treatment
Clearfil Protect Bond showed no difference in bracket failure, with certainty not graded.
No statistically significant difference in bond failure rates was observed between quadrants bonded with Clearfil (CF) and those bonded with the conventional primer (p = 0.316).1 study · 35 participantsUngraded

Clearfil Protect Bond vs Transbond XT conventional adhesive

Population: Patients undergoing fixed orthodontic treatment
1 question
OutcomeEffectEvidenceStatus / GRADE
White spot lesion rate and volume
8 weeks after bonding
Clearfil Protect Bond showed no WSL-rate difference versus conventional adhesive, with certainty not graded.
There was no significant difference among the WSL rates of the Clearfil, Opal Seal, and Transbond XT adhesives (p > 0.05).1 study · 15 participantsUngraded

Opal Seal fluoride-releasing adhesive vs Transbond XT conventional adhesive

Population: Patients undergoing fixed orthodontic treatment
1 question
OutcomeEffectEvidenceStatus / GRADE
White spot lesion rate and volume
8 weeks after bonding
Opal Seal showed no significant difference in WSL rate or volume, with certainty not graded.
The WSL volume was lower in the Opal Seal group than in the Clearfil and Transbond XT groups, but there was no significant difference among the groups (p > 0.05).1 study · 15 participantsUngraded

Adhesive precoated flash-free brackets vs Conventional ceramic brackets

Population: Patients undergoing fixed orthodontic treatment
1 question
OutcomeEffectEvidenceStatus / GRADE
Enamel demineralization (DIAGNOdent score)
Baseline, 1 month, and 6 months after bonding
Adhesive precoated flash-free brackets showed no demineralization difference, with certainty not graded.
Intergroup evaluation showed that there were no statistically significant differences in demineralization measurements between all sides of the conventional and flash-free brackets at all the time intervals (p >0.05).1 study · 30 participantsUngraded

Adhesive flash-free ceramic brackets vs Adhesive precoated ceramic brackets

Population: Patients undergoing fixed orthodontic treatment
1 question
OutcomeEffectEvidenceStatus / GRADE
Enamel demineralization (QLF ΔF)
Baseline to debonding
Flash-free brackets showed no clinical WSL reduction, with certainty not graded.
ΔF values (T0-debonding) were not statistically significantly different between the groups.1 study · 50 participantsUngraded

Comparison

1 question
OutcomeEffectEvidenceStatus / GRADE
Pathogenic bacteria / plaque composition around brackets (fewer pathogenic bacteria with flash-free vs APC; comparable plaque quantity)
no estimate extracted1 studyUngraded

AMSTAR 2 appraisal

Two independent extractors rated each item. Their ratings are shown side by side because they have not been reconciled yet. The overall rating follows Shea et al. 2017: one critical flaw gives Low, more than one gives Critically Low.

ItemExtractor AExtractor BAgree
1Research question includes PICO componentsYesYesyes
2Protocol established before the reviewcriticalPartial YesYesno
3Choice of study designs explainedYesYesyes
4Comprehensive literature searchcriticalPartial YesPartial Yesyes
5Study selection in duplicateYesYesyes
6Data extraction in duplicateYesYesyes
7List of excluded studies with reasonscriticalYesNono
8Included studies described in detailPartial YesPartial Yesyes
9Risk of bias assessed satisfactorilycriticalRCT: Yes · NRSI: YesNRSI: Yes · RCT: Yesno
10Funding of included studies reportedNoNoyes
11Appropriate meta-analysis methodscriticalRCT: N/A · NRSI: N/ANRSI: N/A · RCT: N/Ano
12Impact of risk of bias on the pooled resultsN/AN/Ayes
13Risk of bias accounted for in interpretationcriticalYesYesyes
14Heterogeneity explainedYesYesyes
15Publication bias investigatedcriticalN/AN/Ayes
16Conflicts of interest reportedYesYesyes
OverallHighLowno

Included primary studies 12

Open as a trial list
StudyAlso included byOutcomes it informs hereTrial PICOResults
Comert et al. 2020
Clinical effect of a fluoride-releasing and rechargeable primer in reducing white spot lesions during orthodontic treatment
DOI:10.1016/j.ajodo.2019.06.013
1 other reviewPhotographic white spot lesion severitynot extracted yetnot extracted yet
Al Tuma et al. 2023
Effect of calcium fluoride nanoparticles in prevention of demineralization during orthodontic fixed appliance treatment: a randomized…
DOI:10.1093/ejo/cjac055
this review onlyEnamel demineralization (DIAGNOdent score)not extracted yetnot extracted yet
Alshammari et al. 2019
matched by author and year (probable)
this review onlyEnamel demineralization scorenot extracted yetnot extracted yet
Atilla et al. 2020
A comparative assessment of orthodontic treatment outcomes using the quantitative light-induced fluorescence (QLF) method between direct…
DOI:10.1093/ejo/cjz058
this review onlyWhite spot lesion formation (QLF: fluorescence loss, lesion area)not extracted yetnot extracted yet
Benson et al. 2019
Resin-modified glass ionomer cement vs composite for orthodontic bonding: A multicenter, single-blind, randomized controlled trial
DOI:10.1016/j.ajodo.2018.09.005
this review onlyNew white spot lesion incidence (and first-time bracket bond failure)not extracted yetnot extracted yet
Farzanegan et al. 2021
Effect of the addition of Chitosan and TiO <sub>2</sub> nanoparticles on antibacterial properties of an orthodontic composite in fixed…
DOI:10.1088/2057-1976/ac0609
this review onlyStreptococcus mutans countnot extracted yetnot extracted yet
Horan et al. 2023
Comparison of three orthodontic bonding systems in white spot lesion development: a randomized clinical trial.
PMID:37017436
this review onlyWhite spot lesion development (QLF: mineral loss, lesion area/depth, new lesions)not extracted yetnot extracted yet
Mollabashi et al. 2022
Evaluation of Nano TiO2 Modified Orthodontic Composite Effects on S. mutans Population and Enamel Demineralization in Fixed Orthodontic…
DOI:10.1007/s12011-023-03559-6
this review onlyStreptococcus mutans countnot extracted yetnot extracted yet
Oz et al. 2017
In vivo effect of antibacterial and fluoride-releasing adhesives on enamel demineralization around brackets: A micro-CT study.
PMID:28906138
this review onlyPhotographic white spot lesion severitynot extracted yetnot extracted yet
Oz et al. 2019
Effectiveness of an antibacterial primer used with adhesive-coated brackets on enamel demineralization around brackets: an in vivo study.
PMID:30982931
this review onlyPhotographic white spot lesion severitynot extracted yetnot extracted yet
Tan et al. 2020
Effects of adhesive flash-free brackets on enamel demineralization and periodontal status.
PMID:33378441
this review onlyEnamel demineralization / white spot lesions (DIAGNOdent, QLF)not extracted yetnot extracted yet
Yetkiner et al. 2019
DOI:10.3290/j.ohpd.a43753
this review onlyEnamel demineralization / white spot lesions (DIAGNOdent, QLF)not 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).