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21 01, 2023

Non-surgical occlusal plane cant resolution with lingual straight-wire appliance and miniscrews in a class II asymmetric adult patient

2023-01-21T16:55:19+00:00

Int Orthod. 2023 Jan 18;21(1):100726. doi: 10.1016/j.ortho.2023.100726. Online ahead of print.

ABSTRACT

This case report describes a complex class II case with important maxillo-mandibular asymmetry in an adult patient treated with lingual straight-wire appliance. With the twofold aim of obtaining dramatic aesthetic improvement, since the patient refused surgical option, and ideal occlusal relationship, accurate set-up planification and biomechanical strategies with TADS for occlusal plane cant correction are needed to achieve the planned results. This case report demonstrates the possibility of solving successfully class II malocclusion with significant asymmetry in adult patient without surgery by means of an aesthetic appliance; on the other hand, it underlines the necessity of miniscrews and auxiliaries in order to obtain the best results.

PMID:36669459 | DOI:10.1016/j.ortho.2023.100726

Non-surgical occlusal plane cant resolution with lingual straight-wire appliance and miniscrews in a class II asymmetric adult patient2023-01-21T16:55:19+00:00
13 01, 2023

Invisible treatment of an asymmetric adult class II malocclusion related to unilateral upper lateral incisor agenesis with a straight wire lingual appliance, mini-screw and premolar extraction: A case report

2023-01-13T22:20:05+00:00

Int Orthod. 2023 Jan 5;21(1):100721. doi: 10.1016/j.ortho.2022.100721. Online ahead of print.

ABSTRACT

This case report describes a complex full-step class II malocclusion with unilateral upper lateral incisor agenesis in an adult patient treated with lingual straight-wire appliance and premolar extraction, with the two-fold aim of obtaining ideal occlusal relationship and smile aesthetic improvement. In view of this, it underlines how an appropriate treatment strategy, including extraction choice and anchorage control during space closure, is needed to achieve the planned results with a completely invisible lingual appliance combined with aesthetic veneers.

PMID:36610255 | DOI:10.1016/j.ortho.2022.100721

Invisible treatment of an asymmetric adult class II malocclusion related to unilateral upper lateral incisor agenesis with a straight wire lingual appliance, mini-screw and premolar extraction: A case report2023-01-13T22:20:05+00:00
24 11, 2022

Obstructive sleep apnoea syndrome and anatomical factors: possible correlations

2022-11-24T12:58:49+00:00

Sleep Sci. 2022 Oct-Dec;15(4):429-435. doi: 10.5935/1984-0063.20220074.

ABSTRACT

OBJECTIVES: The following retrospective study was devised with the aim of evaluating the correlation between OSAS and various anatomical factors.

MATERIAL AND METHODS: Thirty-seven patients over the age of 40 were analyzed, of which 19 were classified as OSAS cases and 18 as control cases. For each, 17 anatomical variables were identified and examined using Invivo Dental software on CBCT scans, WebCeph software on laterolateral teleradiographs, and Rhinoceros 6.0 software on dental casts.

RESULTS: A generalized linear model of all the anatomical factors identified only two statistically significant variables. Specifically, the total volume of the palate displayed a inverse correlation with OSAS, while the distance between the S point and the Go point (S-Go) exhibited a direct correlation with the disease.

CONCLUSION: The likelihood of an individual having OSAS appears to decrease as the volume of the palate increases but increase as the lingual measure S-Go increases.

PMID:36419816 | PMC:PMC9670767 | DOI:10.5935/1984-0063.20220074

Obstructive sleep apnoea syndrome and anatomical factors: possible correlations2022-11-24T12:58:49+00:00
6 11, 2022

Three-dimensional assessment of teeth first-, second- and third-order position in Caucasian and African subjects with ideal occlusion

2022-11-06T17:18:49+00:00

Prog Orthod. 2015;16:11. doi: 10.1186/s40510-015-0086-9. Epub 2015 May 26.

ABSTRACT

BACKGROUND: The aim of this study was to provide an updated version of Andrews’ seminal study by exploiting 3D software to analyse the tip, torque and in-out values of two groups of different racial and ethnic background.

METHODS: The analysis was conducted on one Caucasian group (30 individuals) and one of African origin (29). All subjects were adult, in normal occlusion and had no previous history of orthodontic treatment. Rhinoceros™ 3D modelling software was used to identify anatomical reference points, planes and axes and to make the appropriate measurements.

RESULTS: Compared to Andrews’ measurements, we found more positive coronal tip values in both African and Caucasian subjects, while the torque values we measured tended to be less negative in the posterior sectors than those reported by Andrews. We measured greater tip values in the lower jaw of Caucasian with respect to African subjects, particularly in the middle sectors.

CONCLUSIONS: Race and ethnicity have a strong influence on values of tip, torque and in-out. This is translated as a more positive tip in Caucasian subjects and a more positive torque in those of African descent (greater proclination of the incisors). Finally, with respect to the values reported by Andrews, we found a tendency to more positive mean tip (except for at the upper second molars and lower incisors) and less negative torque in the posterior sectors.

PMID:26061990 | PMC:PMC4442781 | DOI:10.1186/s40510-015-0086-9

Three-dimensional assessment of teeth first-, second- and third-order position in Caucasian and African subjects with ideal occlusion2022-11-06T17:18:49+00:00
6 11, 2022

Temporomandibular Joint Disorders in Patients With Different Facial Morphology. A Systematic Review of the Literature

2022-11-06T17:18:49+00:00

J Oral Maxillofac Surg. 2016 Jan;74(1):29-46. doi: 10.1016/j.joms.2015.07.006. Epub 2015 Jul 18.

ABSTRACT

PURPOSE: The present article aimed to review systematically the literature on the relation between facial skeletal structures and temporomandibular joint (TMJ) disorders.

MATERIALS AND METHODS: A systematic search in the dental and medical literature was performed to identify all studies of humans assessing the relation between TMJ disorders and facial morphology. Articles were included based on study design, irrespective of TMJ disorder (eg, disc displacement, osteoarthrosis, or unspecified), skeletal features, diagnostic strategies (e.g., imaging techniques or clinical assessment), and population (eg, demographic features of participants) under investigation. The selected articles were assessed according to a format based on patients, problem, and population, intervention, comparison, and outcome and quality was evaluated based on the Newcastle-Ottawa Scale.

RESULTS: Thirty-four articles were included in the review, 27 of which concerned adult samples and 7 concerned adolescent samples. Quality was generally moderate. The articles dealt with the relation between facial morphology and the following TMJ disorders, assessed clinically or by magnetic resonance (MR): disc displacement (n = 20), osteoarthritis or osteoarthrosis (n = 8), and temporomandibular disorder signs and symptoms (n = 6). The different approaches featuring the various investigations and the presence of some potential methodologic biases complicated a summary of the findings. Most studies reported that some features related to the vertical dimension of the face might help distinguish patients with potential TMJ disc displacement or MR-detected signs of osteoarthrosis from those without TMJ disorders.

CONCLUSIONS: The quality of the available literature is not adequate to provide an evidence base on the topic. Despite the heterogeneity of design and findings of the reviewed articles, it seems reasonable to suggest that skeletal Class II profiles and hyperdivergent growth patterns are likely associated with an increased frequency of TMJ disc displacement and degenerative disorders.

PMID:26255097 | DOI:10.1016/j.joms.2015.07.006

Temporomandibular Joint Disorders in Patients With Different Facial Morphology. A Systematic Review of the Literature2022-11-06T17:18:49+00:00
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