Comparison of three orthodontic bonding systems in white spot lesion development: a randomized clinical trial.

Objectives: To compare the development of white spot lesions (WSLs) during fixed orthodontic therapy among a conventional three-step bonding system, a self-etching primer bonding system, and a one-step adhesive bonding system.

Materials And Methods: Seventy-five patients were randomly allocated into three groups (group 1, conventional bonding system, n = 25; group 2, self-etch primer, n = 25; group 3, primer mixed with adhesive composite, n = 25). Quantitative light-induced fluorescence (QLF) was used to assess WSL parameters.

Cranial base measurements in different anteroposterior skeletal relationships using Bjork-Jarabak analysis.

Objectives: To assess the linear and angular cranial base measurements (Bjork polygon) in different anteroposterior (AP) skeletal relationships using Bjork-Jarabak analysis.

Materials And Methods: Pretreatment lateral cephalograms of 288 (146 women, 142 men, mean ages 21.24 ± 2.

Patients' perceptions of orthodontic treatment experiences during COVID-19: a cross-sectional study.

Background: COVID-19 has impacted the care of patients undergoing orthodontic treatment. We aimed to provide an overall view of patients' perspectives, concerns, and expectations towards their treatment throughout the clinic lockdown during the pandemic; and to assess patients' levels of mental distress and its association with their confidence in resuming care.

Methods: An anonymous, validated, in-person paper questionnaire was distributed to adult orthodontic patients' post-lockdown at an academic institution.

Vertical gingival display changes associated with upper premolars extraction orthodontic treatment: A prospective clinical trial.

Background: Extraction of upper bicuspids have been anecdotally blamed to increase the vertical gingival display (VGD) anteriorly. However, the extraction may be needed in some cases in order to correct the underlying orthodontic problem. Objectives: To investigate and compare vertical gingival display (VGD) changes associated with upper (first vs second) premolars extraction during orthodontic treatment.

Enamel demineralization during clear aligner orthodontic treatment compared with fixed appliance therapy, evaluated with quantitative light-induced fluorescence: A randomized clinical trial.

Introduction: The objective of this prospective randomized clinical trial was to investigate the relationship between clear aligner (CA) therapy and the development of white spot lesions and compare it with orthodontic fixed appliance (FA) therapy.

Methods: This was a prospective randomized clinical trial. The setting was the postgraduate orthodontic clinic at Jordan University of Science and Technology.

Effect of different acid etchants on the remineralization process of white-spot lesions: An in vitro study.

Purpose: To investigate the effect of acid etchants with different low concentrations on remineralization of white spot lesion (WSL).

Methods: WSL were prepared on buccal surfaces of 100 intact premolars using the methyl cellulose gel/lactic acid method. The samples were then placed in a remineralizing solution in addition to fluoride application twice daily for 5 minutes.

Effect of application sequence of fluoride and CPP-ACP on remineralization of white spot lesions in primary teeth: An in-vitro study.

Objective: To explore how application sequence of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) and fluoride influences remineralization of enamel white spot lesions (WSL) in primary teeth.

Design: In this in-vitro study, artificial WSLs were created in 130 primary teeth. Teeth were divided into 4 groups (n=27) and a control group (n=22) and exposed to one of the following remineralization regimens for 10 weeks: Group-1; 500ppm fluoride dentifrice; Group-2; 10% w/v CPP-ACP; Group-3; fluoride applied first, then CPP-ACP; Group-4; CPP-ACP applied first, then fluoride, and Group-5 was control.

Force degradation of orthodontic latex elastics: An in-vivo study.

Introduction: Our objectives were to assess the force degradation of orthodontic latex elastics over 48 hours in vivo and to study the relationship between the amount of mouth opening and the degree of force decay.

Methods: Fifty-two orthodontic patients wearing fixed appliances using Class II elastics were asked to wear premeasured-force 3/16-in heavy and medium intermaxillary elastics. The force amounts were measured and compared at different time intervals.

Occlusal bite force change after orthodontic treatment with Andresen functional appliance.

Objectives: The aim of this study was to determine the occlusal bite force (OBF) changes, at the incisal and molar regions, after orthodontic treatment with functional appliance therapy in preadolescent subjects.

Materials And Methods: OBF was measured for patients (17 females and 16 males) before and after the treatment with Andresen functional appliance for an average period of 9 months (mean age was 11.8±1.

Long-term clinical effect of adjunctive antimicrobial photodynamic therapy in periodontal treatment: a randomized clinical trial.

Mechanical removal of microbial biofilm dental plaque from tooth surfaces is important for treatment of periodontal diseases. However, the effectiveness of conventional scaling and root planing (SRP) is affected by the local conditions and residual bacteria which may affect the healing process. We performed a randomized clinical trial to test our hypothesis that adjunctive antimicrobial photodynamic therapy (aPDT) plus SRP has significant effect compared with SRP alone, which can last for 1 year.

Mandibular symphysis morphology and dimensions in different anteroposterior jaw relationships.

Objective: To assess the morphology and dimensions of mandibular symphysis (MS) in different anteroposterior jaw relationships and to investigate whether craniofacial parameters have any correlation with its shape and/or dimensions.

Materials And Methods: Lateral cephalograms of subjects with Class I, Class II, and Class III skeletal relationships were traced. Several craniofacial and MS parameters were measured.

Effect of fixed orthodontic appliances bonded with different etching techniques on tooth color: a prospective clinical study.

Introduction: For most orthodontic patients, esthetic concerns are as important as functional demands. The purpose of this study was to assess the effect of self-etching primer and conventional acid etching on tooth color after orthodontic treatment.

Methods: A total of 34 patients were enrolled in a clinical trial and divided into 2 groups based on age: adolescents (≤17 years) and adults (>17 years).

Dental age assessment in patients with maxillary canine displacement.

Introduction: The aims of this study were to investigate the relationship between dental age and maxillary canine displacement with 2 methods, to study differences in dental development between the displaced and nondisplaced sides, and to investigate sex differences in dental development in the studied groups.

Methods: Two hundred forty subjects were recruited for this study. They were divided into 2 groups: the palatally displaced canine group (87 girls, 33 boys) and the buccally displaced canine group (81 girls, 39 boys).

Skeletal, dental and soft tissue changes in Class III patients treated with fixed appliances and lower premolar extractions.

Background: Mild Class III malocciusions can be treated by upper incisor proclination and lower incisor retroclination following extraction of the lower first premolars.

Aims: To compare the skeletal, dental and soft tissue changes in Class III patients treated with fixed appliances, Class III traction and lower first premolar extractions with the changes in a group of untreated Class III patients.

Methods: The Treatment group consisted of 30 Class III patients (Mean age 13.

The relationship between personality traits, pain perception and attitude toward orthodontic treatment.

Objective: To investigate the relationship between personality traits and a person's attitude toward orthodontic treatment and perception of pain during orthodontic treatment.

Materials And Methods: The sample consisted of two groups: group 1 consisted of 200 untreated subjects (100 males, 100 females; average age, 21.50 +/- 3.

Perception of facial profile attractiveness of different antero-posterior and vertical proportions.

This study investigated the influence of changing the antero-posterior (AP) and vertical proportions of the lower face on the rankings of facial attractiveness. Four hundred and fifty-four (219 males and 235 females) native Jordanians of various ages and professions rated the attractiveness of a sequence of antero-posteriorly and vertically altered male and female profile images. Attractiveness ranking scores were obtained from the visual assessment of these digitally altered male and female profile images that represented a range of AP and vertical lower facial proportions.

Anteroposterior and vertical components of class II division 1 and division 2 malocclusion.

Objective: To describe and analyze the skeletal and dental characteristics associated with Class II division 1 (Class II/1) and Class II division 2 (Class II/2) malocclusions in the anteroposterior and vertical dimensions.

Materials And Methods: A total of 551 lateral cephalograms were used; 293 films of Class II/1 and 258 films of Class II/2 malocclusions. Lateral cephalographs were traced and analyzed.

Tooth size discrepancies and arch parameters among different malocclusions in a Jordanian sample.

The objectives of this study were to determine the mean mesiodistal tooth width of the dentition, Bolton anterior and overall ratios, arch length, and arch width in the different malocclusions in a Jordanian sample. The mesiodistal tooth width, arch width, and length were measured on a total of 140 orthodontic models of school students aged 13-15 years of different occlusal relationships (Class I, Class II division 1, Class II division 2, and Class III malocclusions). Anterior and overall Bolton ratios were calculated.

Uvulo-glosso-pharyngeal dimensions in different anteroposterior skeletal patterns.

The aim of this study was to investigate the uvulo-glosso-pharyngeal dimensions in subjects with different anteroposterior jaw relationship. Cephalometric radiograph of 90 subjects (45 females and 45 males, aged 14-17 years) were divided into three groups according to the ANB angle, ie, group 1, skeletal Class I (ANB angle 1-5); group 2, skeletal Class II (ANB angle >5); and group 3, skeletal Class III (ANB angle <1). In addition, each group was divided into two subgroups according to sex.

Prevalence of malocclusion in 13-15 year-old North Jordanian school children.

Objectives: This study was carried out to determine the prevalence of malocclusion in 13-15-year-old North Jordanian schoolchildren.

Methods: One thousand and three children aged 13-15 years (619 females, 384 males) were examined using Björk et al. (1964) registration method.

Self-perception of malocclusion among north Jordanian school children.

This study was undertaken to assess the factors affecting self-perception and the demand for orthodontic treatment among north Jordanian school children. In total, 1404 students randomly selected to represent five geographical areas of northern Jordan were examined. The students were further subgrouped according to gender (858 females, 546 males), age (985 13 year olds, 419 17 year olds) and rural/urban place of residence (212 rural, 1192 urban).

Attractiveness ratings of anterior open bites and reverse overjets using the aesthetic component of the Index of Orthodontic Treatment Need.

This study was carried out to determine the level of attractiveness of anterior open bites (AOB) and reverse overjets of varying severity. A sample of 180 non-dental students (101 females and 79 males; average age 20 +/- 0.75 years) and 45 dental professionals (12 females and 33 males; average age 35.

Orthodontic treatment need and demand in 12-14-year-old north Jordanian school children.

This study was undertaken to assess the need and demand for orthodontic treatment among 12-14-year-old north Jordanian school children. In total, 1002 students randomly selected to represent five geographical areas of Irbid were examined. The examinations were carried out twice, first on the pupils in the school premises and then using study models taken from each student.