Table 2.
Study characteristics of individual studies.
| Study ID | No. (M/F) | Diagnosis | Tooth type | Groups | No. of drop out | Endodontic treatment | Evaluation method | Evaluation interval/considered interval | Observed outcomes |
|---|---|---|---|---|---|---|---|---|---|
| Hakan Arslan | PLD-13/4 LD-8/8 |
Periapical lesions with scores 2 or 3 in accordance with the periapical index | Symptomatic mandibular molars | LLLT-16 MOCK LASER-17 |
2 from LLLT 1 from placebo |
2 visits using intracanal medicament | VAS scale | 4, 8, 12, 24, and 48 hours 24 hours, 48 hours, 72 hours |
24 hours (P < .05) Significant 48 hours (P < .05) Significant 72 hours (P < .05) Significant |
| Ozgur Genc Sen | PLD-15/21 LD-19/18 |
Chronic periapical infection (minimum size of lesion, 2*2 mm | Single-rooted teeth | LLLT-42 MOCK LASER-42 |
2 in each group | A single visit | NRS scale | 24, 48, and 72 hours 24 hours, 48 hours, 72 hours |
48 hours showed significantly less pain in LD group than in PLD group (P < .05) and 72 hours showed insignificant difference (P > .05) |
| Mahta Fazlyab | NR | Chronic periapical infection | Symptomatic first or second mandibular molars | LLLT-18 MOCK LASER-18 |
0 | A single visit | VAS scale | 4, 8, 12, and 24 hours and 2, 3, and 7days 24 hours, 48 hours, 72 hours |
Both 24 hours and 48 hours showed intense pain in both groups with [mean (SD) = 0.22 (0.54)] |
LD, laser disinfection; PLD, pseudo laser disinfection; VAS scale, visual analogue scale; NRS scale, numerical rating scale.