Measuring Maxillary Posterior Tooth Movement: A Model Assessment using Palatal and Dental Superimposition.

Since the introduction of Invisalign by Align Technology, Inc. in 1999, questions and debates have persisted regarding the precision of Invisalign (clear aligner) therapy, particularly when compared to the use of traditional fixed appliances. This becomes particularly significant in cases involving anteroposterior, vertical, and transverse corrections, where precise comparisons are of paramount importance.

Bioceramic micro-fillers reinforce antibiofilm and remineralization properties of clear aligner attachment materials.

Clear aligners, while offering a more hygienic alternative to fixed appliances, are still associated with challenges including plaque accumulation and enamel demineralization. The aim of the present study was to investigate the antibiofilm and remineralization effectiveness of innovative flowable composite attachments containing bioceramic micro-fillers. Four experimental attachments were formulated and bonded to human enamel specimens: 3M Filtek Supreme flowable composite (Filtek SF) + 10% bioactive glass 45S5 (BAG), Filtek SF + 30% BAG, Filtek SF + 10% Bredigite (BRT), Filtek SF + 30% BRT.

Cone-beam computed tomographic reconstructions in the evaluation of maxillary impacted canines.

Purpose: Prior to cone-beam computed tomography (CBCT), orthodontic competence included radiological interpretation. Nevertheless, maxillary impacted canines (MICs), because of their position and adjacent complex anatomy, have been challenging to interpret, particularly with regard to root resorption. Although CBCT cross-sectional reconstructions of MICs yielded clearer insights into its diagnosis and treatment planning, the value of simultaneously using 2 different cross-sectional or multiplanar reconstructions of the CBCT datasets - orthogonal and curved/panoramic multiplanar reconstructions - has hitherto not been considered.

Comparison of changes in the nasal cavity, pharyngeal airway, and maxillary sinus volumes after expansion and maxillary protraction with two protocols: Rapid palatal expansion versus alternate rapid maxillary expansion and constriction.

Objective: To evaluate and compare a series of volume changes in the nasal cavity (NC), nasopharynx, oropharynx, and maxillary sinuses (MS) in growing Class III patients after either rapid palatal expansion (RPE) or alternate rapid maxillary expansion and constriction (Alt-RAMEC) followed by facemask (FM) therapy, by using conebeam computed tomography (CBCT).

Methods: Forty growing Class III patients were retrospectively selected and divided into two matched groups: RPE/FM (14 females, 6 males; mean age, 9.66 ± 1.

A new method assessing predicted and achieved mandibular tooth movement in adults treated with clear aligners using CBCT and individual crown superimposition.

The purpose of this study was to demonstrate a new method for quantifying the difference between predicted and achieved tooth movement with Invisalign using stable three-dimensional (3D) mandibular landmarks and dental superimposition. Cone-beam computed tomography (CBCT) scans before (T1) and after (T2) the first series of aligners, their corresponding digital models (ClinCheck initial of the first series as T1 and ClinCheck initial of the refinement series as T2), and the ClinCheck final model of the first series as the predicted were obtained from 5 patients treated with non-extraction Invisalign therapy. After segmentation of the mandible and its dentition, T1 and T2 CBCTs were superimposed on stable anatomic structures (Pogonion and bilateral mental foramen) along with the pre-registered ClinCheck models.

A retrospective study of incidental findings occurring in a consecutive case series of lateral cephalograms of 12- to 20-year-old patients referred for routine orthodontic treatment.

Purpose: Lateral cephalograms of orthodontic patients may contain incidental findings that could potentially lead to harm.

Materials And Methods: The lateral cephalograms of 1765 consecutive 12- to 20-year-old patients, being considered for routine orthodontic treatment, were retrospectively reviewed. These patients were considered normal, because no abnormalities were found either in their medical history or on their clinical examination.

Theory-Guided Remote Cooperative Learning-Based Preventive Dental Education as Part of the School Curriculum.

Background: Oral health is fundamental to overall well-being. As teens are at high risk for tooth decay, we require a unique approach to motivate them to maintain oral health.

Methods: Sixty-four adolescents (10-13 years) were recruited from 2 schools.

Accuracy of intraoral scan images in full arch with orthodontic brackets: a retrospective in vivo study.

Objectives: The purpose of this retrospective study was to evaluate the accuracy of intraoral scan (IOS) images in the maxillary and mandibular arches with orthodontic brackets.

Material And Methods: From digital impressions of 140 patients who underwent orthodontic treatment, consecutive IOS images were selected based on standardized inclusion criteria: Two pre-orthodontic IOS images (IOS1 and IOS2) of permanent dentition with fully erupted second molars and IOS images obtained immediately after orthodontic bracket bonding (IOSb). Superimpositions were performed to evaluate the reproducibility of repeated IOS images.

Outcomes of orthodontic treatment performed by individual orthodontists vs 2 orthodontists collaborating on treatment.

Introduction: One factor that can affect treatment outcomes is the treatment provider, and this factor has not been extensively studied. This research aimed to evaluate orthodontic treatment quality, length, and efficiency when 2 orthodontists collaborated on treatment, compared with the treatment provided solely by either orthodontist.

Methods: A total of 150 consecutively treated subjects were divided into 3 equal groups based on the treating clinician.

Mandibular dental changes following serial and late extraction of mandibular second premolars.

Objectives: To determine changes in occlusal curves and dental tipping occurring from mandibular second premolar serial extraction, early extraction of deciduous mandibular second molars with missing second premolars, and late second premolar extraction compared with untreated controls.

Materials And Methods: Information was collected from 85 subjects at three time points: T0, prior to serial extraction; T1, after serial extraction and drift prior to orthodontic treatment, and pretreatment for the late premolar extraction patients; and T2, posttreatment. Untreated age- and gender-matched controls were used for comparison.

A Standardized Protocol for the Prospective Follow-Up of Cleft Lip and Palate Patients.

Objective: To develop a standardized all-encompassing protocol for the assessment of cleft lip and palate patients with clinical and research implications.

Method: Electronic database searches were conducted and 13 major cleft centers worldwide were contacted in order to prepare for the development of the protocol. In preparation, the available evidence was reviewed and potential fistula-related risk determinants from 4 different domains were identified.

Dimensional changes in the palate associated with slow maxillary expansion for early treatment of posterior crossbite.

Objectives: To compare palatal symmetry, dimensions, and molar angulations following early mixed-dentition slow maxillary expansion with parameters in normal controls.

Materials And Methods: A total of 30 patients treated with a Haas-type expander for unilateral posterior crossbite with functional shift were compared with 30 controls matched for dental age, gender, and molar relationship. Records were taken before (T1) and after expansion (T2).

Time Trends and Determinants of Fistula in Cleft Patients at BC Children's Hospital, Canada: A Retrospective 18-Year Medical Chart Audit.

Objective: To examine the time trends and determinants of palatal fistula in children with different types of cleft at British Columbia's Children's Hospital between 1995 and 2012.

Methods: A total of 558 medical charts of nonsyndromic patients with cleft lip and palate were eligible for the chart review. The occurrence of primary palatal fistula was assessed at any time throughout the patient's total observation period.

Fistula in Cleft Lip and Palate Patients-A Systematic Scoping Review.

Aims: (1) Assess the level of available evidence regarding fistula occurrence in cleft lip and palate patients, (2) identify main research areas in the original studies, (3) evaluate the quality of original studies, and (4) summarize the evidence.

Methods: Two independent researchers searched the Cochrane Database of Systematic Reviews, Medline, Web of Knowledge, Web of Science and EMBASE, the Grey literature, and the reference lists of main references. The level of evidence was assessed based on study design and according to the Hierarchy of Evidence.

Mandibular changes secondary to serial extractions compared with late premolar extractions and controls.

Introduction: Variations in treatment times for serial extraction and late premolar extraction patients may be due to differences in the time needed to flatten the occlusal curves. In this study, we compared tooth tipping and occlusal curves in patients treated by serial extractions or late premolar extractions with untreated controls.

Methods: Mandibular dental casts and cephalometric radiographs were collected from 90 subjects (30 Class I control subjects, 30 patients with serial extractions, and 30 with late premolar extractions) at 3 time points: T0, baseline for the controls and serial extraction patients; T1, after natural drift and preorthodontics for the controls and the serial extraction patients, and pretreatment for the late premolar extraction patients; and T2, after comprehensive orthodontic treatment for the serial extraction and the late premolar extraction groups.

Orthodontic treatment considerations for a patient with erythropoietic protoporphyria.

Erythropoietic protoporphyria (EPP) is an inherited blood disorder in which formation of the heme group of hemoglobin is defective. Specifically, a deficiency of the enzyme ferrochelatase leads to the accumulation of protoporphyrin, resulting in often painful photosensitivity of the skin and tissues. The prevalence of EPP is estimated at 1:75,000 to 1:200,000.

Effects of an empowerment-based education program for public health nurses in Taiwan.

Aim And Objectives: The aim of this study was to examine the effects of an empowerment-based education program (EBEP) on employee empowerment, job satisfaction, job productivity and innovative behaviours for public health nurses (PHN) in Taiwan.

Background: Empowerment is an important consideration among nurses trying to function in ever-changing health care and education settings. Several studies focused on the trend of public health nursing revealed that PHN have experienced a severe feeling of powerlessness.

The development, implementation, utilization and outcomes of a comprehensive dental program for older adults residing in long-term care facilities.

This paper documents the experience of the University of British Columbia's Geriatric Dentistry Program (GDP) with emphasis on the dental treatment needs of patients during its first year of operation. The GDP provided access to dental care for residents of longterm care facilities, education for hospital staff concerning daily mouth care, education of dental students and an opportunity for research. The first year of clinical activity saw a small, yet significant, improvement in oral health for residents using the dental services.