Comparison of 3D-printed and laboratory-fabricated Hyrax on stress distribution and displacement of the maxillary complex: a 3D finite element study
ConclusionThe F-Hyrax exerts more stress and displacement on the maxilla than both the T-Hyrax and H-Hyrax, where the weak link appears to be the solder joint. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - March 18, 2024 Category: Dentistry Source Type: research

Biomechanical analysis of total arch maxillary distalization using infrazygomatic crest miniscrews: a finite element analysis study
ConclusionThe maxillary incisors and canines have different immediate movement tendencies according to the height of the anterior point of the en-masse distalization force application. Based on the PA height increase, a change from lingual to buccal tipping and less extrusion tendency was observed for the incisors, while the lingual tipping and extrusion trend for canines increased. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - March 11, 2024 Category: Dentistry Source Type: research

The association between self-esteem and aesthetic component of smile among adolescents
ConclusionThe self-esteem in adolescence is influenced the most by gender, but the orthodontic treatment and better smile aesthetics might also contribute. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - March 4, 2024 Category: Dentistry Source Type: research

Skeletal stability of inter-molar mandibular distraction osteogenesis in growing patients
ConclusionsIMDO was highly stable within a follow-up period of 2.3  ± 0.9 years; however, growth appears to have been inhibited. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - February 26, 2024 Category: Dentistry Source Type: research

Surface wear of attachments in patients during clear aligner therapy: a prospective clinical study
ConclusionsThe volume of attachment wear increased gradually with treatment time. Sex, attachment type, and initial attachment volume were risk factors for the volume of attachment wear. The deepest wear regions of 3-mm rectangular attachments were at the corners of gingival edges, while the deepest wear regions of optimized attachments were at surface ridges. Four months after treatment, optimized root control attachments showed more relative wear than 3-mm rectangular attachments. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - February 19, 2024 Category: Dentistry Source Type: research

The effect of micro-osteoperforations on the rate of maxillary incisors' retraction in orthodontic space closure: a randomized controlled clinical trial
ConclusionsMOPs did not accelerate the retraction of the maxillary incisors, nor were they associated with greater incisor inclination or root resorption.Trial registration ClinicalTrials.gov NCT03089996. Registered 24 March 2017 —https://clinicaltrials.gov/ct2/show/NCT03089996. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - February 12, 2024 Category: Dentistry Source Type: research

The effect of vertical skeletal proportions, skeletal maturation, and age on midpalatal suture maturation: a CBCT-based study
ConclusionsBased on this cross-sectional analysis, midpalatal sutural maturation classification is associated with chronological age and occurs later in males. Neither CVM staging nor variation in vertical skeletal proportions were useful predictors of midpalatal maturation stage. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - February 5, 2024 Category: Dentistry Source Type: research

Curve of Spee modification in different vertical skeletal patterns after clear aligner therapy: a 3D set-up retrospective study
ConclusionTreatment with aligners did not lead to a clinically significant change in COS depth. However, when dividing the sample into groups based on craniofacial divergence, COS depth change differed significantly between the three groups. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - January 22, 2024 Category: Dentistry Source Type: research

The effect of enhanced structure in the posterior segment of clear aligners during anterior retraction: a three-dimensional finite element and experimental model analysis
ConclusionsEnhanced structure allowed force distribution more in accordance with optimal principles of biomechanics during the extraction space closure while permitting less mesial tipping and anchorage loss of posterior teeth and better retraction of anterior teeth. Thus, enhanced structure alleviated the roller coaster effect associated with extraction cases and offered a new possibility for anchorage reinforcement in clear aligner therapy. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - January 15, 2024 Category: Dentistry Source Type: research

Mechanical force increases tooth movement and promotes remodeling of alveolar bone defects augmented with bovine bone mineral
ConclusionThis study explored the mechanisms of mechanical force-induced alveolar bone remodeling with bovine bone mineral grafts during OTM. The results might provide molecular insights into the related clinical problems of whether we can move teeth into the grafted materials; and how these materials become biologically remodeled and degraded under mechanical force. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - January 8, 2024 Category: Dentistry Source Type: research

Comparison of the effects on facial soft tissues produced by rapid and slow maxillary expansion using stereophotogrammetry: a randomized clinical trial
ConclusionsRME produced significant facial soft tissue changes when compared to SME. RME induced greater increases in both nasal and intercanthal widths (1.3  mm and 0.7 mm, respectively). These findings, though statistically significant, probably are not clinically relevant.Trial registration ISRCTN, ISRCTN18263886. Registered 8 November 2016,https://www.isrctn.com/ISRCTN18263886?q=Franchi&filters=&sort=&offset=2&totalResults=2&page=1&pageSize=10 (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - January 3, 2024 Category: Dentistry Source Type: research

Influence of maxillary molar distalization with clear aligners on three-dimensional direction: molar distal movement, intrusion, distal tip and crown buccal torque
ConclusionApproximately 2  mm maxillary molar distalization was achieved in this study. Deviational movement of intrusion, distal tip and crown buccal torque beyond the clear aligner virtual design appeared to a certain degree after distalization. Thus, more attention should be given to molar intrusion and distal tip and cr own buccal torque as the designed distalization increases. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - December 28, 2023 Category: Dentistry Source Type: research

Dentofacial characteristics of children and adolescents with foetal alcohol spectrum disorders: a comparison with matched controls
ConclusionsDentofacial characteristics of children and adolescents with FASD significantly differ from controls. Early orthodontic diagnosis and prophylaxis should play a part of the interdisciplinary care of patients in this group. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - December 26, 2023 Category: Dentistry Source Type: research

Accuracy of 3D facial scans: a comparison of three different scanning system in an in vivo study
ConclusionsAll three acquisition systems proved to be effective in capturing 3D images of the face, with the exception of the Face Hunter scanner, that produced statistically significant differences in linear measurements for the distances Tr –Na′ and Zyg–Zyg with respect to direct anthropometric measurements. (Source: Progress in Orthodontics)
Source: Progress in Orthodontics - December 25, 2023 Category: Dentistry Source Type: research

Three-dimensional assessment of periodontal support of lower incisors for skeletal Class II malocclusion undergoing presurgical orthodontic treatment with different vertical skeletal patterns
ConclusionFor Class II malocclusion patients undergoing presurgical orthodontic treatment, the changes in the periodontal support of the lower central incisors varied in different vertical skeletal patterns. There exists a great periodontal risk of alveolar bone resorption on the lingual side for various vertical types. To avoid alveolar bone deterioration, it is essential to investigate the bone remodeling of patients with different alveolar bone conditions and cautiously plan tooth movement prior to orthodontic treatment. Moreover, 3D measurements based on CBCT construction can provide complementary information to tradit...
Source: Progress in Orthodontics - December 18, 2023 Category: Dentistry Source Type: research