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BMC Oral Health Feb 2024To evaluate the outcome quality of manual and digital orthodontic diagnostic setups in non-extraction cases according to the American Board of Orthodontics model grading...
BACKGROUND
To evaluate the outcome quality of manual and digital orthodontic diagnostic setups in non-extraction cases according to the American Board of Orthodontics model grading system and to calculate the laboratory time needed for orthodontic diagnostic setup construction.
METHODS
The sample consisted of 60 pretreatment models of non-extraction orthodontic cases with age ranges of 18-30. The study models were duplicated and scanned with 3Shape R-750 scanner. Digital and manual diagnostic setups were constructed according to their respective treatment plans. Digital diagnostic setups were 3D printed and then both manual and digital setups were assessed using the modified American Board of Orthodontics Cast Radiograph evaluation score (ABO CRE), which includes alignment, marginal ridge, buccolingual inclination, occlusal contacts, occlusal relationships, interproximal contacts, and overjet. The laboratory time needed for orthodontic setups was measured in minutes.
RESULTS
The total ABO CRE score of the digital diagnostic setup group (5.93 ± 2.74) was significantly lower than that of the manual diagnostic setup group (13.08 ± 3.25). The manual diagnostic setup had significantly larger scores in marginal ridge, overjet, overbite, buccolingual inclination, occlusal relationship, and total scores (P < 0.01). However, the digital diagnostic setup had a statistically larger occlusal contacts score than the manual diagnostic setup (P < 0.01). There was no significant difference between the alignment and the interproximal contacts scores in either group. The manual diagnostic setup needed significantly longer laboratory time (187.8 ± 14.22) than the digital setup (93.08 ± 12.65) (P < 0.01). Comparison between broken teeth was performed by using the chi-square test which found no significant difference between different tooth types.
CONCLUSIONS
Digital diagnostic setup is a reliable tool for orthodontic diagnostic setup construction providing excellent quality setup models. Manual diagnostic setup is time consuming with a technique-sensitive laboratory procedure.
Topics: Humans; United States; Tooth; Malocclusion, Angle Class II; Orthodontics
PubMed: 38336704
DOI: 10.1186/s12903-024-03961-z -
Clinical Oral Investigations Feb 2024To compare dental caries, oral hygiene, periodontal status, bruxism, malocclusion, tooth loss, and salivary alterations between autistic and typical developing... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
To compare dental caries, oral hygiene, periodontal status, bruxism, malocclusion, tooth loss, and salivary alterations between autistic and typical developing individuals.
MATERIAL AND METHODS
Observational studies presenting clinical measures of oral outcomes between autism spectrum disorder (ASD) individuals and controls. EMBASE, LILACS, PubMed, PsycINFO, Scopus, Web of Science, Google Scholar, and ProQuest were searched up to June 26, 2023. Pairs of reviewers independently conducted study selection, data extraction, and assessments of methodological quality and certainty of evidence. Meta-analyses of standardized mean differences (SMD) and risk ratio (RR) were performed.
RESULTS
A total of 47 studies comprising 6885 autistic individuals were included in the review. Autistic individuals had significantly higher severity of dental-caries experience in primary teeth (SMD 0.29, 95%CI 0.02, 0.56), of dental plaque presence (SMD 0.59, 95%CI 0.24, 0.94), and of gingivitis (SMD 0.45, 95%CI 0.02, 0.88). Autistic individuals showed higher probability of occurrence of gingivitis (RR 1.34, 95%CI 1.08, 1.66,), bruxism (RR 4.23, 95%CI 2.32, 7.74), overjet (RR 2.16, 95%CI 1.28, 3.64), overbite (RR 1.62, 95%CI 1.02, 2.59), crossbite (RR 1.48, 95%CI 1.02, 2.13), and openbite (RR 2.37, 95%CI 1.46, 3.85), when compared to neurotypical individuals. Most estimates showed a small effect size with very low certainty of evidence.
CONCLUSION
Autistic individuals show worse oral health status than controls.
CLINICAL RELEVANCE
The findings reported herein can help to build health policies to better serve autistic individuals including prevention actions and access to specialized dental care.
Topics: Humans; Dental Caries; Autistic Disorder; Autism Spectrum Disorder; Bruxism; Gingivitis; Malocclusion; Overbite
PubMed: 38321186
DOI: 10.1007/s00784-024-05500-0 -
World Journal of Clinical Cases Jan 2024The relation between orthodontic treatment and temporomandibular disorders (TMDs) is under debate; the management of TMD during orthodontic treatment has always been a...
BACKGROUND
The relation between orthodontic treatment and temporomandibular disorders (TMDs) is under debate; the management of TMD during orthodontic treatment has always been a challenge. If TMD symptoms occur during orthodontic treatment, an immediate pause of orthodontic adjustments is recommended; the treatment can resume when the symptoms are managed and stabilized.
CASE SUMMARY
This case report presents a patient (26-year-old, female) with angle class I, skeletal class II and TMDs. The treatment was a hybrid of clear aligners, fixed appliances and temporary anchorage devices (TADs). After 3 mo resting and treatment on her TMD, the patient's TMD symptom alleviated, but her anterior occlusion displayed deep overbite. Therefore, the fixed appliances with TAD were used to correct the anterior deep-bite and level maxillary and mandibular deep curves. After the levelling, the patient showed dual bite with centric relation and maximum intercuspation discrepancy on her occlusion. After careful examination of temporomandibular joints (TMJ) position, the stable bite splint and Invisible Mandibular Advancement appliance were used to reconstruct her occlusion. Eventually, the improved facial appearance and relatively stable occlusion were achieved. The 1-year follow-up records showed there was no obvious change in TMJ morphology, and her occlusion was stable.
CONCLUSION
TMD screening and monitoring is of great clinical importance in the TMD susceptible patients. Hybrid treatment with clear aligners and fixed appliances and TADs is an effective treatment modality for the complex cases.
PubMed: 38313641
DOI: 10.12998/wjcc.v12.i2.431 -
Journal of Speech, Language, and... Feb 2024This study investigates differences in American English consonants produced by patients who present with various dentofacial disharmonies (DFDs), including severe...
PURPOSE
This study investigates differences in American English consonants produced by patients who present with various dentofacial disharmonies (DFDs), including severe overbites (Class II), underbites (Class III), and anterior open bites. Previous studies have found that patients with these malocclusion types all produce lingual sibilants and plosives with increased spectral center of gravity and increased spectral variance relative to controls. This result is puzzling since some DFD groups differ from controls in opposite ways, and it is also difficult to interpret because spectral moment measures are affected by a wide range of speech and nonspeech factors.
METHOD
To better understand the articulatory basis of these differences, we apply articulatorily interpretable spectral measures derived from multitaper spectra.
RESULTS
We find that all groups of DFD patients produce /s ʃ t tʃ/ with midfrequency spectral peaks that are less prominent than those of the control group, but peak frequency measures are largely the same across all groups.
CONCLUSION
We conclude that the DFD patients differ more in sibilant noise source properties than in front cavity filter properties.
Topics: Humans; Phonetics; Speech; Tongue; Spectrum Analysis; Language
PubMed: 38295298
DOI: 10.1044/2023_JSLHR-23-00280 -
International Orthodontics Jun 2024Non-surgical treatment of Class II subdivision may involve complex mechanics or asymmetric tooth extraction in its resolution. This report demonstrates the result and...
Non-surgical treatment of Class II subdivision may involve complex mechanics or asymmetric tooth extraction in its resolution. This report demonstrates the result and the short-term stability of Class II subdivision treated with asymmetrically installed Herbst appliance followed by conventional fixed orthodontic appliance. The approach allowed the correction of the unilateral Class II molar relationship and increased overjet, as well as the deviation of dental midlines, with improvement in lip posture and facial profile. The results remained stable two years after treatment, confirming the treatment success.
Topics: Humans; Malocclusion, Angle Class II; Orthodontic Appliances, Functional; Cephalometry; Female; Orthodontic Appliances, Fixed; Orthodontic Appliance Design; Treatment Outcome; Overbite; Male; Orthodontics, Corrective; Lip; Tooth Movement Techniques
PubMed: 38290193
DOI: 10.1016/j.ortho.2023.100838 -
Proceedings of the ... International... Aug 2023This study uses multitaper spectral analysis to examine the differences in consonants produced by patients who present with different dentofacial disharmonies (DFD)...
This study uses multitaper spectral analysis to examine the differences in consonants produced by patients who present with different dentofacial disharmonies (DFD) including severe overbites (Class II), underbites (Class III) and anterior open bites. Previous studies have found that patients with these malocclusion types all produce sibilants and plosives with increased spectral center of gravity and increased spectral spread relative to controls. This result is puzzling since some DFD groups differ from controls in opposite ways. To better understand the articulatory basis of these differences, we apply several spectral shape measures and find that all groups of DFD patients produce /s ʃ t tʃ/ with mid-frequency spectral peaks that are less prominent than those of the control group, but peak frequency measures are largely the same across all groups. This indicates that the DFD patients differ more in sibilant noise source than front cavity size..
PubMed: 38250564
DOI: No ID Found -
International Orthodontics Jun 202424/09/1998; sex: female.
Thirteen-year-old female patient with Class II division 1 malocclusion and hypodivergent facial pattern treated with buccal fixed appliance. Case report n 230052. European College of Orthodontics. Commission of affiliation and titularisation.
DATE OF BIRTH
24/09/1998; sex: female.
PRE-TREATMENT DOCUMENTS
13 years 5 months old; 07/03/2012.
DIAGNOSIS
Skeletal Class I with biretrusion, hypodivergent facial pattern; angle's Class II division 1 with overbite; moderate dento-maxillary discrepancy; maxillary incisor malposition.
TREATMENT PLANNING
Bimaxillary buccal fixed appliance with Class II elastics. Active treatment duration: 25 months.
POST-TREATMENT DOCUMENTS
15 years 7 months old; 09/05/2014. POST-RETENTION DOCUMENTS: (minimum 1 year) 16 years 9 months old; 08/07/2015. Retention period: unlimited.
Topics: Humans; Female; Malocclusion, Angle Class II; Adolescent; Orthodontic Appliances, Fixed; Cephalometry; Overbite; Patient Care Planning; Maxilla; Orthodontics, Corrective
PubMed: 38242043
DOI: 10.1016/j.ortho.2023.100839 -
Journal of Orthodontic Science 2023The Damon system is an effective, less-invasive treatment that provides orthodontic dentists with an adequate biomechanical process, offering a reduction in treatment...
The Damon system is an effective, less-invasive treatment that provides orthodontic dentists with an adequate biomechanical process, offering a reduction in treatment time; patients with temporomandibular dysfunction present even greater complexity in their clinical picture, relying on clinical and radiographic differential diagnoses to facilitate a good prognosis. The objective was to apply the orthodontic treatment (Damon technique) to stabilize patients with temporomandibular dysfunction. The patient with premature loss of the first lower molars (36 and 46) experienced pathological alterations in the temporomandibular joints (TMJs) (bilaterally). The diagnosis was reached using the clinical history of temporomandibular joint disorders (diagnostic criteria) axis II: moderate pain (VAS) in muscles, moderate stress (Hamilton 51/60), lateral and panoramic cephalic radiographs, magnetic resonance imaging of bilateral TMJ, cephalometry, photographs, and models. Treatment with the Damon system is recommended to recover optimal functional occlusion in a short period, followed by referral for oral rehabilitation as an adjunct to the treatment plan. The verticalization of the second molars, maximum optimal intercuspidation, appropriate overbite and overjet, and pain control in the TMJ were evaluated. Stabilization of the disc condyle complex by eliminating interference and premature points of contact providing cervical/cranio/mandibular balance.
PubMed: 38234652
DOI: 10.4103/jos.jos_100_22 -
Orthodontics & Craniofacial Research Jun 2024To compare the clinical effectiveness of V-bend bonded retainers (BR) versus vacuum-formed retainers (VFR) regarding their capacity to maintain treatment stability and... (Randomized Controlled Trial)
Randomized Controlled Trial Comparative Study
OBJECTIVE
To compare the clinical effectiveness of V-bend bonded retainers (BR) versus vacuum-formed retainers (VFR) regarding their capacity to maintain treatment stability and survival rates after 12 months.
MATERIALS AND METHODS
Patients finishing orthodontic treatment were randomly allocated into two groups. The BR group received maxillary and mandibular BRs in the lingual surfaces of the anterior teeth. The VFR group received VFRs right after fixed appliances removal. The patients were evaluated at four time-points: at fixed appliances removal (T0), after 3 (T1), 6 (T2) and 12 months (T3). In each time-point digital models were obtained and analysed with the OrthoAnalyzer™ software. Treatment stability based on occlusal outcomes and retainers' survival rates were evaluated. Intergroup comparisons were performed using Mann-Whitney U-tests. The Kaplan-Meier survival plot and the log-rank test were employed to assess the retainers' survival.
RESULTS
Both BR and VFR groups included 25 patients. The groups were comparable regarding their baseline characteristics. Up to 6 months, both retainers were equally effective; however, after 12 months, BRs were more effective in maintaining the incisors' alignment in the maxilla and the mandible compared to the VFRs. No differences were noticed in the intercanine and intermolar widths, overjet and overbite. There were no differences regarding the retainers' survivability in both arches.
CONCLUSIONS
BRs were more effective in maintaining the alignment of the incisors in the maxilla and mandible compared to VFRs after 12 months. Both retainers presented the same survival rates after the same period.
Topics: Humans; Orthodontic Retainers; Female; Male; Vacuum; Orthodontic Appliance Design; Adolescent; Dental Bonding; Treatment Outcome; Malocclusion; Young Adult; Incisor
PubMed: 38226739
DOI: 10.1111/ocr.12753 -
Journal of Oral & Maxillofacial Research 2023Dentofacial deformity following juvenile idiopathic arthritis with temporomandibular joint involvement is associated with functional, aesthetic, and psychosocial...
OBJECTIVES
Dentofacial deformity following juvenile idiopathic arthritis with temporomandibular joint involvement is associated with functional, aesthetic, and psychosocial impairment. Surgical treatment may involve combinations of orthognathic surgery. The aims of this retrospective study were to assess orofacial symptoms, functional and aesthetic status, and stability after orthognathic surgery.
MATERIAL AND METHODS
Nineteen patients with juvenile idiopathic arthritis of the temporomandibular joint (TMJ) and dentofacial deformities were included. All patients were treated with combinations of bilateral sagittal split osteotomy, Le Fort I and/or genioplasty, between September 10, 2007 and October 17, 2017. Analysis of patient symptoms and clinical registrations, and frontal/lateral cephalograms was performed pre- and postoperative and long-term (mean: 3.8 and 2.6 years, respectively).
RESULTS
Patients experienced no changes in orofacial symptoms or TMJ function, and stable normalisation of horizontal and vertical incisal relations at long-term (horizontal overbite; vertical overbite: P < 0.05). Mandibular lengthening was achieved postoperatively (from mean 79.7 to 87.2 mm; P = 0.004) and was stable. Sella-nasion to A point (SNA) and sella-nasion to B point (SNB) angles increased postoperatively (SNA, mean 79.9° to 82.8°; P = 0.022 and SNB, mean 73.9° to 77.8°; P = 0.003), however, largely reverted to preoperative status at long-term.
CONCLUSIONS
Orthognathic surgery normalized incisal relations while providing stable mandibular lengthening without long-term deterioration of temporomandibular joint function or orofacial symptoms. No long-term effect on jaw advancements was observed.
PubMed: 38222878
DOI: 10.5037/jomr.2023.14404