Mucositis severity (mild to moderate) · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis
Low level laser therapy led to higher mucositis severity (mild to moderate) compared with sham (placebo) laser treatment; GRADE not reported.
1 finding from 1 review
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth
1 finding from 1 review
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth
Low-level laser therapy (LLLT) showed no clear difference in radiological failure compared with low-level laser therapy (LLLT) + calcium hydroxide; GRADE not reported.
1 finding from 1 review
Maximum pain (verbal rating scale, VRS) · People requiring retreatment of periapical lesions (failed root canal therapy)
1 finding from 1 review
Maximum pain (verbal rating scale, VRS) · People requiring retreatment of periapical lesions (failed root canal therapy)
It is very uncertain whether low energy level laser therapy (LLLT) changes maximum pain (verbal rating scale, VRS) compared with control (no laser device used) (very low certainty).
1 finding from 1 review
Rate of orthodontic tooth movement during space closure stage (maxillary arch), mm/month · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
It is very uncertain whether low level laser therapy (LLLT) changes rate of orthodontic tooth movement during space closure stage… compared with conventional orthodontic appliance treatment (very low certainty).
1 finding from 1 review
Side effects or other adverse events · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
1 finding from 1 review
Periodontal health during molar intrusion · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
1 finding from 1 review
Abellan 2021 assessed periodontal health (plaque index, pocket depth, bleeding on probing) after intrusion of maxillary molars; no evidence of significant difference with LLLT. Statistical test results not published.
1 study
GRADE not reported
Total number of orthodontic appliance adjustment appointments during alignment stage · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
It is very uncertain whether low level laser therapy (LLLT) changes total number of orthodontic appliance adjustment appointments during… compared with conventional orthodontic appliance treatment (very low certainty).
1 finding from 1 review
Discomfort/pain · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
It is very uncertain whether low level laser therapy (LLLT) changes patient perception of pain and discomfort (VAS 0 to 100 mm) compared with conventional orthodontic appliance treatment (very low certainty).
1 finding from 1 review
Duration of orthodontic treatment during alignment stage · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
It is very uncertain whether low level laser therapy (LLLT) changes duration of orthodontic treatment during alignment stage compared with conventional orthodontic appliance treatment (very low certainty).
1 finding from 1 review
Patient-reported need for analgesics · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
The review found no eligible studies for this question.
1 finding from 1 review
Total number of orthodontic appliance adjustment appointments during treatment · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
The review found no eligible studies for this question.
1 finding from 1 review
Overall treatment time wearing orthodontic appliances · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
The review found no eligible studies for this question.
1 finding from 1 review
Orthodontic tooth movement (OTM) during alignment stage · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
It is very uncertain whether low level laser therapy (LLLT) changes rate of orthodontic tooth movement during alignment stage… compared with conventional orthodontic appliance treatment (very low certainty).
1 finding from 1 review
Rate of maxillary molar intrusion for correction of anterior open bite · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
1 finding from 1 review
Two studies (62 participants), not pooled. Abellan 2021: no significant difference in molar intrusion at 3 months (1.25 vs 1.72 mm) or 6 months (1.09 vs 1.28 mm), nor rate per month. Hasan 2022: increased intrusion…
2 studies · 62 participants
GRADE not reported
Orthodontically-induced inflammatory root resorption (OIIRR) during molar intrusion · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
1 finding from 1 review
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth
1 finding from 1 review
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth
Low-level laser therapy (LLLT) showed no clear difference in radiological failure compared with calcium hydroxide (CH); GRADE not reported.
1 finding from 1 review
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth
1 finding from 1 review