Minimally important differences in oral health-related quality of life after fixed orthodontic treatment: a prospective cohort study.

Background: The minimally important difference (MID, the smallest difference that patients perceive as beneficial) has been proposed to assess whether study results are clinically meaningful, reducing the shortcoming of P-values-based approaches in the assessment of clinical outcomes. The post-treatment changes and the MID in Oral Health-Related Quality of Life (OHRQoL) among adults undergoing fixed orthodontic treatment were investigated.

Methods: Ninety-two patients (29.

Clinical effectiveness of the Eruption Guidance Appliances in treating malocclusion in the mixed dentition: A systematic review and meta-analysis.

Aim: To evaluate the clinical effectiveness of the eruption guidance appliances (EGAs) in treating malocclusion in the early mixed dentition.

Design: Electronic databases were comprehensively searched for the eligibility literature of the EGA treatment for a period spanning from the earliest available date in each database up to July 2021. Randomized controlled trials, controlled clinical trials, and prospective and retrospective cohort studies were included in the present review.

Unilateral Scissor Bite Managed with Prefabricated Functional Appliances in Primary Dentition-A New Interceptive Orthodontic Protocol.

A unilateral scissor bite is a type of severe malocclusion in primary dentition that can influence the development of the mandible and face. The present case report describes an interceptive treatment on a 4-year-old girl with a unilateral scissor bite combined with an anterior crossbite, increased reverse overjet, and overbite on a skeletal Class III base. The patient was treated with a new Prefabricated Functional Appliance (PFA) which was modified from a Frankel-III appliance to induce a mandible to move backwards and relieve an occlusion discrepancy of the dental arch, and a functional dental rehabilitation with resin and myofunctional exercises with a PFA which was modified from an oral screen appliance were performed during the treatment.

Associations between salivary cytokines and periodontal and microbiological parameters in orthodontic patients.

Orthodontic treatment can lead to microbial-induced gingival inflammation and aseptic periodontal inflammations. The aim of this study was to investigate the relationship between salivary pro-inflammatory cytokines levels with gingival health status and oral microbe loads among patients undergoing orthodontic treatment.The present investigation was a cross-sectional study among a sample of 111 consecutive orthodontic patients (mean age 18.

Changes in the upper airway, hyoid bone and craniofacial morphology between patients treated with headgear activator and Herbst appliance: A retrospective study on lateral cephalometry.

Background: The present study compared the treatment changes in the upper airway, hyoid bone position and craniofacial morphology between two groups of children with skeletal class II malocclusion treated with the headgear activator (HGA) and Herbst appliance (Herbst).

Setting And Sample Population: Orthodontic population from the Faculty of Dentistry of the University of Hong Kong.

Methods: Thirty-four skeletal class II patients treated with the HGA (17 patients, mean age 10.

Incorrect measurements and misleading conclusions in the article "Comparison of the efficacy of tooth alignment among lingual and labial brackets: an in vitro study".

Background/objective: To reproduce the methods and results of the study by Alobeid et al. (2018) in which the efficacy of tooth alignment using conventional labial and lingual orthodontic bracket systems was assessed.

Materials/methods: We used the identical experimental protocol and tested (i) regular twin bracket (GAC-Twin [Dentsply]) and lingual twin bracket systems (Incognito [3M]), (ii) together with NiTi 0.

Upper Airway Changes following Functional Treatment with the Headgear Herbst or Headgear Twin Block Appliance Assessed on Lateral Cephalograms and Magnetic Resonance Imaging.

Objective: The present study compared the changes in the upper airway dimensions and sleep-related breathing disorder (SRBD) condition between functional treatment with the headgear Herbst (HG-Herbst) and headgear Twin Block (HG-TB) appliance. Soft tissues were assessed on lateral cephalometric X-ray and magnetic resonance imaging (MRI).

Materials And Methods: Consecutive patients who sought orthodontic treatment at the Faculty of Dentistry of The University of Hong Kong were screened.

Orthodontic Treatment Need and the Psychosocial Impact of Malocclusion in 12-Year-Old Hong Kong Children.

Objectives: To determine the prevalence of orthodontic treatment need in 12-year-old children in Hong Kong and its relationship with the psychosocial impact of malocclusion and to assess their associations with sociodemographic factors.

Materials And Methods: A random sample of 687 12-year-old children was recruited from 45 secondary schools in Hong Kong. Orthodontic treatment need was assessed on study models by five indices: the Dental Health Component of the Index of Orthodontic Treatment Need (IOTN-DHC), the Aesthetic Component of the IOTN (IOTN-AC), the Dental Aesthetic Index (DAI), the Index of Complexity Outcome and Need (ICON), and the Peer Assessment Rating (PAR).

Elastodontic appliance assisted fixed appliance treatment: A new two-phase protocol for extraction cases.

Elastodontic appliance (EA) is a type of removable appliance that has been widely used in interceptive orthodontics. The present case report describes a severe crowding case treated with a new two-phase protocol by using an EA and a fixed appliance. A 13-year-old patient with severe dental crowding, increased overjet and overbite on a skeletal Class II base was selected.

Digital Models as an Alternative to Plaster Casts in Assessment of Orthodontic Treatment Outcomes.

Objective: This study aimed to compare the use of digital models and plaster casts in assessing the improvement in occlusion following orthodontic treatment.

Materials And Methods: Digital models and plaster casts of 39 consecutive patients at pre- and posttreatment stages were obtained and assessed using the Peer Assessment Rating (PAR) index and the Index of Complexity and Treatment Need (ICON). PAR and ICON scores were compared at individual and group levels.

Change of mandibular position during two-phase orthodontic treatment of skeletal class II in the Chinese population.

The aim of this study was to evaluate the change in mandibular position during a two-phase orthodontic treatment of skeletal Class II malocclusion. Thirty consecutively treated Chinese male adolescents who had undergone two-phase treatment with Herbst appliance and fixed appliance and fulfilled the specific selection criteria were sampled. Cephalograms taken at T0 (before treatment), T1 (at the end of functional appliance treatment), and T2 (at the end of fixed appliance treatment) were analyzed.

Craniofacial characteristics related to daytime sleepiness screened by the paediatric daytime sleepiness scale.

The present cross-sectional study aimed to assess daytime sleepiness in Chinese adolescents using the Paediatric Daytime Sleepiness Scale (PDSS) and to identify associations between PDSS answers and craniofacial characteristics. A group of 265 Chinese adolescents aged 11-17 years self-completed the PDSS, and their extra- and intra-oral craniofacial characteristics were recorded. Among the participants, 59.

An evaluation of two different mandibular advancement devices on craniofacial characteristics and upper airway dimensions of Chinese adult obstructive sleep apnea patients.

Objectives: To evaluate the effects of two different mandibular advancement devices (MADs) on craniofacial characteristics and upper airway dimensions of Chinese adult patients with obstructive sleep apnea (OSA).

Materials And Methods: Forty-five patients with OSA were recruited as part of a prospective randomized crossover trial for treatment with two different MADs. Lateral cephalograms were taken, and the Epworth Sleepiness Scale and the Sleep Apnea Quality of Life Index were completed at baseline.

Angular photogrammetric analysis of the soft tissue profile in 12-year-old southern Chinese.

Introduction: To quantify average angular measurements that define the soft tissue profiles of 12-year-old southern Chinese and to determine gender differences.

Materials And Methods: A random population sample of 514 12-year-old children was recruited (about 10% of a Hong Kong Chinese birth cohort). Photographs were taken in natural head posture and 12 soft tissue landmarks were located on the photos to measure 12 angular measurements using ImageJ (V1.

Cephalometric norms for the upper airway of 12-year-old Chinese children.

Objective: To establish cephalometric norms for the upper airway of 12-year-old Chinese children, and to assess these norms with regard to gender, age, ethnicity and other craniofacial structures.

Methods: Lateral cephalograms were obtained from a random sample of 425 12-year-old Chinese children (224 boys and 201 girls) to establish the Chinese norms, and from a matched group of 108 12-year-old Caucasian children (61 boys and 47 girls) as an ethnic comparison. Published data on the upper airway norms of Chinese adults were used to make age comparisons.

Acid etching of human enamel in clinical applications: a systematic review.

Statement Of Problem: The laboratory-based enamel acid-etching doctrine with 30% to 50% phosphoric acid for 60 seconds to generate the maximum amount of Type 1 and/or Type 2 etch pattern has been established for more than 30 years. However, this recommendation may not be clinically relevant.

Purpose: The purpose of this systematic review was to compare clinically accepted protocols of enamel acid etching with the laboratory protocol.

Natural compounds containing mouthrinses in the management of dental plaque and gingivitis: a systematic review.

Objectives: To evaluate the effectiveness of natural compounds containing mouthrinse (NCCM) as an adjunct to unsupervised oral hygiene in the management of dental plaque and gingivitis.

Materials And Methods: An electronic search for clinical studies of NCCMs was conducted in Medline-PubMed, the Cochrane Central Register of Controlled Trials and EMBASE for a period spanning from the earliest available date in each database up to February 2013. Plaque index, gingival index, and gingival bleeding index were selected as primary outcomes.

The effects of natural compounds-containing mouthrinses on patients with fixed orthodontic appliance treatment: clinical and microbiological outcomes.

Aim: To investigate the effects of two natural compounds-containing mouthrinses (NCCMs) (a fructus mume (FM) extract-containing mouthrinse and an essential oil (EO)-containing mouthrinse) on gingival health and microbial profiles in young orthodontic patients.

Design: This 6-month randomized, single-blinded, parallel-controlled clinical trial consists of 90 patients with fixed appliance treatment. The subjects were allocated to (1) negative control group: oral hygiene instruction (OHI) alone; (2) test group 1: OHI plus EO mouthrinse; and (3) test group 2: OHI plus FM mouthrinse.

Lingual retainers bonded without liquid resin: a 5-year follow-up study.

Introduction: The aim of this in-vivo study study was to evaluate the effect of excluding the liquid resin component of a composite bonding product that is based on bisphenol A diglycidylmethacrylate when bonding lingual retainers.

Methods: The material comprised 40 metal multistrand lingual retainers bonded onto the lingual surfaces of maxillary and mandibular anterior teeth. Transbond LR composite paste and liquid resin (3M Unitek, Monrovia, Calif) were used to bond retainers in the control group (20 retainers).

Differences in dentofacial characteristics between southern versus northern Chinese adolescents.

Aim: To compare the dentofacial characteristics of southern and northern Chinese adolescents.

Methods: A southern Chinese sample comprised 70 males (Mean age 12.4 +/- 0.

Comparison of the antimicrobial activity of Listerine and Corsodyl on orthodontic brackets in vitro.

Introduction: The aim of this study was to evaluate the antimicrobial efficacy of 2 commercially available mouth rinses on a monospecies-biofilm model on orthodontic brackets in vitro.

Methods: The antimicrobial effects of the 2 mouth rinses, Listerine (tartar control; IDS Manufacturing, Bangkok, Thailand) and Corsodyl (SmithKline Beecham, Maidenhead, United Kingdom), on the planktonic Streptococcus mutans were tested by maximum inhibitory dilution assay. The cell viability of S mutans biofilm on Damon3 MX brackets (Ormco, Glendora, Calif) after exposure to the 2 mouth rinses was quantified by 2,3-bis (2-methoxy-4-nitro-5-sulfophenyl)-5-[(phenylamino) carbonyl]-2H-tetrazolium hydroxide (XTT) reduction assay.

Prunus mume extract exhibits antimicrobial activity against pathogenic oral bacteria.

Objectives: Prunus mume is a common fruit in Asia, which has been used in traditional Chinese medicine. In this study, we focused on the antimicrobial properties of Prunus mume extract against oral pathogens related to dental caries and periodontal diseases.

Study Design: A total of 15 oral pathogens including Streptococcus mutans, S.

Changes in oral health-related quality of life during fixed orthodontic appliance therapy: an 18-month prospective longitudinal study.

Introduction: There is an increasing research interest in quality of life issues in orthodontics. In this study, we aimed to investigate changes in oral health related quality of life (OHRQoL) among adults during fixed orthodontic appliance therapy (FOAT).

Methods: Two hundred thirty-two adult patients were enrolled from a consecutive sample at a university dental hospital.