Alveolar bone changes in maxillary and mandibular anterior teeth during orthodontic treatment: A systematic review and meta‐analysis

Abstract Backgroud To analyze the morphological changes of the anterior alveolar bone after the retraction of incisors in premolar extraction cases and the relationship between incisor retraction and remodeling of the alveolar base represented by points A and B displacements. Methods Pre- (T0) and post-treatment (T1) lateral cephalograms of 308 subjects in the maxilla and 154 subjects in the mandible who underwent the orthodontic treatment with extraction of 2 premolars in upper or lower arches were included. Alveolar bone width and height in both the maxillary and mandible incisor area were measured at T0 and T1 respectively. By superimposing the T0 and T1 cephalometric tracings, changes of points A and B, and the movement of the incisors were also measured. Then the correlation between incisor movement and the displacements of points A and B was analyzed. Results The alveolar bone width (ABW) showed a significant decrease in both maxilla and mandible (P < 0.001) except the labial side of the mandible (P > 0.05). The alveolar bone height (ABH) showed a significant increase in the labial side of maxilla and a significant decrease in the lingual side of maxilla and mandible. A strong positive correlation was verified between incisor movement and position changes of points A and B in both horizontal and vertical directions. Conclusions Anterior alveolar bone width and height generally decreased after orthodontic treatment. Incisor retraction led to significant position changes of points A and B. The decrease of anterior alveolar bone due to significant incisor retraction should be taken into account in treatment planning.

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Alveolar bone changes after rapid maxillary expansion with tooth-born appliances: a systematic review

European Journal of Orthodontics ◽

10.1093/ejo/cjx057 ◽

2017 ◽

Vol 40 (3) ◽

pp. 296-303 ◽

Cited By ~ 18

Author(s):

Antonino Lo Giudice ◽

Ersilia Barbato ◽

Leandro Cosentino ◽

Claudia Maria Ferraro ◽

Rosalia Leonardi

Keyword(s):

Systematic Review ◽

Alveolar Bone ◽

Rapid Maxillary Expansion ◽

Maxillary Expansion ◽

Bone Changes

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The Role of Mandibular Third Molars on Lower Anterior Teeth Crowding and Relapse after Orthodontic Treatment : A Systematic Review

Smile Dental Journal ◽

10.12816/0010795 ◽

2014 ◽

Vol 9 (2) ◽

pp. 45-45 ◽

Cited By ~ 1

Author(s):

Khalid H. Zawawi ◽

Marcello Melis

Keyword(s):

Systematic Review ◽

Orthodontic Treatment ◽

Third Molars ◽

Anterior Teeth ◽

Mandibular Third Molars

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Comparison of InvisalignⓇ Aligners versus Fixed Appliance Treatment in pain perception: a systematic review and meta-analysis

10.21203/rs.2.9973/v1 ◽

2019 ◽

Author(s):

Dinis Pereira ◽

Vanessa Machado ◽

João Botelho ◽

José João Mendes ◽

Ana Sintra Delgado

Keyword(s):

Systematic Review ◽

Random Effects ◽

Orthodontic Treatment ◽

Pain Perception ◽

Randomized Clinical Trials ◽

Meta Analysis ◽

Multiple Time ◽

Case Control Studies ◽

Standard Material ◽

Fixed Appliances

Abstract Background: This systematic review aimed to compare the pain discomfort levels between InvisalignⓇ aligners comparing with traditional fixed appliances at multiple time points, through Pain Visual Analog Scale (VAS). Methods: Four electronic databases (Pubmed, Medline, CENTRAL and Scholar) were searched up to February 2019. There were no restrictions on year and publication status. Randomized clinical trials (RCTs) and case-control studies comparing pain perception through VAS in patients treated with Invisalign aligners and with labial appliances were included. Risk of bias within and across studies was assessed using Cochrane tool and Newcastle-Ottawa Scale (NOS) approach. Random-effects meta-analysis were conducted. VAS score at 1, 3 and 7 days, and analgesic consumption was collected. Pairwise and Binary Random-Effects Meta-analyses were used to synthesize available data. Results: At the initial search, a total of 87 articles were retrieved. Following the review protocol, 4 articles met the inclusion criteria and were included, with a total of 214 participants (139 females, 75 males). All studies were considered of high methodological quality. The results demonstrate that Invisalign aligners seems to be associated with significantly less pain than fixed appliances at 7 days after beginning the orthodontic treatment, although at 1 and 3 days the pain experience was similar in both orthodontics appliances. In regard to the type of material, SmartTrackⓇ aligners appear to give significantly better comfort for orthodontic patients than previous standard material, being that 3 days after appliance’s insertion this pain differential becomes significant, and this difference is more pronounced at 7 days. Conclusion: Patients treated with Invisalign experience less pain discomfort than those treated with fixed appliances and consume less analgesics. Overall, Invisalign promotes better pain and discomfort experience for the patient in the course of orthodontic treatment. Larger RCTs are needed to definitely demonstrate these findings throughout the orthodontic treatment.

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Effects of mouth breathing on facial skeletal development and malocclusion in children: A systematic review and meta-analysis.

10.21203/rs.3.rs-28100/v1 ◽

2020 ◽

Author(s):

Ziyi Zhao ◽

Leilei Zheng ◽

Xiaoya Huang ◽

Caiyu Li ◽

Jing Liu ◽

...

Keyword(s):

Systematic Review ◽

Skeletal Development ◽

Meta Analysis ◽

Mouth Breathing ◽

Occlusal Plane ◽

Cochrane Library ◽

Nasal Breathing ◽

Anterior Teeth ◽

Newcastle Ottawa Scale ◽

The Impact

Abstract BACKGROUND: Mouth breathing is closely related to the facial skeletal development and malocclusion. The purpose of this systematic review and meta-analysis was to assess the effect of mouth breathing on facial skeletal development and malocclusion in children. METHODS: An electronic search in PubMed, the Cochrane Library, Medline, Web of Science, EMBASE and Sigle through February 23rd, 2020, was conducted. Methodological quality assessments of the selected articles were performed using the Newcastle-Ottawa Scale. Review Manager 5.3, was used to synthesize various parameters associated with the impact of mouth breathing on facial skeletal development and malocclusion. RESULTS: Following full-text evaluations for eligibility, 7 studies (387 mouth-breathing subjects and 433 nasal-breathing controls) were included in the final quantitative synthesis; they were all high-quality. The included indicators were SNA (p>0.050), ANS-PNS (p>0.050), 1.NB (p>0.050), MP-H (p>0.050), FMA (p>0.050), SNB (MD: -1.99, P <0.0001), ANB (MD: 0.95, P = 0.0005), SN-OP (MD: 3.20, P < 0.0001), SNGoGn (MD: 4.34, P < 0.0001), 1-NA (MD: 0.72, P = 0.004), 1. NA (MD: 1.98, P = 0.020), 1-NB (MD: 1.06, P < 0.0001), SPAS (MD: -5.23, P < 0.0001), PAS (MD: -2.11, P < 0.0001), and C3-H (MD: -1.34, P < 0.0001). CONCLUSIONS: The results showed that mouth breathing can cause underdevelopment of the mandible. The mandible rotated backward and downward, and the occlusal plane was steep. However, there was little effect on the maxilla. In addition, mouth breathing presented a tendency of lip inclination of the upper and lower anterior teeth. Airway stenosis was common in mouth-breathing children. TRIAL REGISTRATION: [email protected]; registration number CRD42019129198 KEYWORDS: Mouth breathing; Facial skeletal development; Children; Systematic review, Meta-analysis.

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