Abstract Background and objective Diode lasers are becoming popular in gingival treatment following orthodontic treatments. Despite their merit clinical implications, postoperative pain bleeding after surgery with diode not assessed except few controversial studies. Method This controlled trial was conducted on 30 healthy patients aged 17–29 years, needing esthetic-only gingivectomy the anterior maxilla. The were randomly divided into two groups of 15 each: experimental (laser-assisted...

Background: Antimicrobial photodynamic therapy (aPDT) is a noninvasive treatment approach that eradicates broad variety of harmful microorganisms. This study aimed to examine the impact aPDT with curcumin on shear bond strength (SBS) orthodontic bracket enamel. Materials and Methods: In this in vitro study, 45 intact human premolars were randomly divided into three groups (N = 15): control group, group 500 mg/L, 1000 mg/L. After performing aPDT, brackets attached surface teeth then samples...

The aim of this study was to compare frictional forces between monocrystalline alumina (MA), polycrystalline (PA), and stainless steel (SS) brackets with two SS wires: Rectangular round.In in vitro study, 60 0.022 [20 PA (0° torque, Forestadent, Germany) 20 MA Ormco, California, USA)] plus Foretadent, archwires (30 rectangular 0.019 ×0.025 30 round 0.018 archwires, Ortho Technology, USA) were used subgroups 10 from the combination all archwires. A universal testing machine (Instron, Model...

Traditional retainers (both metal and fiber-reinforced composite [FRC]) have limitations, a retainer made from more flexible ligature wires might be advantageous. We aimed to compare an experimental design with two traditional retainers.In this prospective preliminary clinical trial, 150 post-treatment patients were enrolled randomly divided into three groups of 50 each receive mandibular canine-to-canine FRC, spiral wire (FSW), twisted (TW). The monitored monthly. time at which the first...

Pain is the most common complication of orthodontic treatment. Low-level laser therapy (LLLT) has been suggested as a new analgesic treatment free adverse effects medications. However, it not studied thoroughly, and available studies are quite controversial. Moreover, helium neon (He-Ne) assessed before. This split-mouth placebo-controlled randomized clinical trial was performed on 16 male 14 female patients requiring bilateral upper canine retraction. The study at private clinic in Sari,...

Introduction: Previous studies on risk factors of obstructive sleep apnea (OSA) are highly controversial and mostly identifying a few cephalometric factors.Methods: OSA diagnosis was made according to the patients' apnea-hypopnea index (AHI). Included were 74 patients (AHI > 10) 52 control subjects ≤ 10 + free other symptoms). In both groups, 18 parameters traced (SNA, SNB, ANB, soft palate's length (PNS-P), inferior airway space, distance from mandibular plane hyoid (MP-H), lengths mandible...

Fixed orthodontic retainers have numerous advantages, but it is not known whether they can exert pathological forces on supporting tissues around the splinted teeth. The purpose of this study was to investigate how inclination lower anterior teeth affect dental displacement and also change direction occlusal loads exerted its tissues.Four three-dimensional finite element models part mandible were designed. All contained incisors canines, their periodontal ligament layers (PDLs), bone (both...

Background: The stage of tooth formation is one the most reliable indicators for predicting a patient’s developmental age by radiographs. This study compared accuracy three distinct dental estimation methods (Demirjian, Nolla, and Willems) in children aged 3–17 northern Iranian population. Methods: cross‐sectional examined panoramic radiographs 434 from Mazandaran Province, Iran, who had teeth 31–37 present on left mandible. employed Demirjian, Willems to estimate sample compare it with...

Introduction: Epulis fissuratum is often formed as a result of poor fitting denture. The conventional treatment for this fibrous hyperplastic tissue to excise it using scalpel and close the wound by continuous or an interrupted suture. increased utilization lasers in dentistry also includes carbon dioxide (CO2) place surgical scalpels soft surgeries. objective study assess feasibility utilizing CO2 laser epulis fissuratum. Methods: In clinical trial research (IRCT code: IRCT2016071124969N2),...

Abstract – Root fracture diagnosis is a clinical difficulty that in most cases can only be detected through radiography. The objective of this study was to compare the diagnostic accuracy two types digitally enhanced images (reverse‐contrast and colorization) with original digital radiographies detecting experimental root fractures. Two hundred extracted single‐rooted human teeth were endodontically instrumented then divided groups, one control group test group, including fractured teeth....

Purpose This study investigated the association between maxillary impacted canines’ position and maxilla’s morphological features in an Iranian population based on cone-beam computed tomography (CBCT) images. Material methods In this cross-sectional descriptive-analytical study, 47 CBCT images of unilateral buccally canines palatally were examined. Several variables compared non-impacted sides, buccal palatal impaction types. Results Gender age not significantly associated with canine type....

This study aimed to compare the intra and postoperative complications of frenectomy procedure with a surgical scalpel versus 445 nm 980 diode lasers.

Background: Bonding brackets to dental surfaces restored with composites are increasing. No studies date have assessed the efficacy of laser irradiation in roughening composite and resulted shear bond strength (SBS) bonded bracket. We assessed, for 1 st time, two beams compared conventional methods. Materials Methods: Sixty-five discs light-cured resin were stored deionized distilled water 7 days. They divided into five groups 12 plus a group scanning electron microscopy (SEM): Bur-abrasion...

Introduction: Providing reliable bonding of the bracket base and zirconia surface is required to apply orthodontic force. The purpose this scientific experiment was evaluate efficacy three different methods preparation for Zirconia, including roughening, sandblasting Nd: YAG laser, in shear bond strength (SBS) brackets.Methods: Fifty-four discs were divided into groups 18: A) Hydrofluoric acid etching, B) sandblasting, C) irradiation using power 1.5 W 10 seconds. After brackets, samples...