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Showing 5 results for Orthodontics
Interrelationships of endodontic- orthodontic treatments
S. Khedmat ,
Volume 18, Issue 1 (3-2005)
Abstract
The purpose of this article was reviewing the literature related to the mutual effects of endodontics and orthodontics on each other providing documented information that can be used by dentists in clinical practice. The effect of orthodontic treatment on the dental pulp and its role in root resorption, the influence of previous trauma to the tooth and endodontic treatment in orthodontic tooth movements and root resorption, recommendations regarding endodontic treatment during orthodontic tooth movement and the role of the orthodontic forces in provision and outcome of endodontic treatment are being discussed. The effect of the orthodontic tooth movement on the pulp is focused primarily on the neurovascular system which can cause degenerative and/or inflammatory responses in the dental pulp. Although, most of these changes are considered reversible, it seems that teeth with complete apical foramen and teeth subjected to previous insults, such as trauma, caries, restorations and periodontal diseases are more susceptible to pulpal irreversible changes. Teeth with root canal treatment that are well cleaned shaped, and three- dimensionally obturated, exhibit less propensity to apical root resorption during orthodontic tooth movement. This outcome depends on the absence of microleakage for bacterial ingress. A traumatized tooth can be moved orthodontically with minimal risk of resorption, provided that the pulp has not been severely injured (infection or necrosis). If there is evidence of pulpal demise, appropriate endodontic treatment is necessary prior to orthodontic treatment .If a previously traumatized tooth exhibits resorption, there is a greater chance that orthodontic tooth movement will enhance the resorptive process. If a tooth has been severely traumatized (intrusion, avulsion) there would be a greater incidence of resorption with tooth movement. It is recommended that teeth requiring root canal treatment during orthodontic movement be initially cleaned and shaped followed by the interim placement of calcium hydroxide. Final canal obturation with gutta-percha should be accomplished upon the completion of orthodontic treatment. Endodontically treated teeth can be moved orthodontically similar to teeth with vital pulps. In case of endodontic procedures like apexification, there may be no need to delay the orthodontic treatment.
Comparison of anthropometric measurements as substitutes for McNamara’s cephalometric maxillomandibular unit measurements
F. Mojtahedzadeh, S. Alizadeh,
Volume 24, Issue 2 (4-2011)
Abstract

Background and Aims: Cephalometric measurements cannot be performed for screening purposes, therefore orthodontists usually have to use either photographic or anthropometric measurements in such occasions. Finding a valid and reliable alternative could be of great value. The purpose of this study was to evaluate the correlation between McNamara's cephalometric unit difference and a proposed soft tissue equivalent.
Materials and Methods: An anthropometric ruler was redesigned and used in this study. Soft tissue measurements were performed on 36 randomly selected specimens by two investigators. The soft tissue measurements included external auditory meatus to subnasale (Ext-Sn), external auditory meatus to soft tissue pogonion (Ext-Pog), and the difference between them (UDMA´). These measurements were considered as equivalents to cephalometric indices in McNamara's anteroposterior measurements, including maxillary (Co-A) and mandibular (Co-Gn) unit length and their difference (UDMA), respectively.
Results: All soft tissue variables had an intra-class correlation coefficient (ICC) above 0.90. There was a high and significant correlation between cephalometric and anthropometric measurements (P<0.01). The ICC between (Ext-Sn) and (Co-A) was 0.890, 0.869 between (Ext-Pog) and (Co-Gn), and 0.819 between UDMA´ and UDMA.
Conclusion: The proposed anthropometric method showed a good correlation with cephalometric equivalents and the results show that this method could be used for screening purposes, especially when a low-cost, non-invasive method is required. However it cannot be considered as a substitute for cephalometry in diagnostic and treatment purposes.


The effects of herbal mouthwashes on periodontal parameters of patients undergoing fixed orthodontic treatment compared to chlorhexidine 0.2%
Faramarz Mojtahedzade, Neda Moslemi, Ahmad Sodagar, Gita Kiaee, Bita ,
Volume 30, Issue 1 (6-2017)
Abstract

Background and Aims: There is an increased risk of periodontal diseases in patients undergoing fixed orthodontic treatment. Chlorhexidine (CHX) is frequently used to promote oral hygiene; however, it is associated with several complications. Herbal mouthwashes can be used as the substitute without having similar complications. The aim the present study was to compare the effects of herbal mouthwashes (Matrica and Persica) with CHX 0.2% on the periodontal parameters of patients under fixed orthodontic treatment.

Materials and Methods: In a double-blind randomized clinical trial, 84 patients under fix orthodontic treatment were selected. After receiving oral hygiene instruction, the patients were randomly assigned to four groups (group 1: Matrica, group 2: Persica, group 3: CHX 0.02%, group 4: normal saline). Dental plaque scores (PI), gingival inflammation (GI) and papillary bleeding (PBI) indices were measured at the beginning, 1 week after receiving oral hygiene instructions and 30 days after mouthwash consumption. The scores of the periodontal indices were statistically analyzed by Kruskal Wallis, ANOVA the paired Mann-whitney U test and Tukey test.

Results: All of the indices were significantly reduced in study groups (except for the control). Matrica and Persica mouthwashes were similarly effective in improving the periodontal parameters. Their efficacy in decreasing the PBI scores was significantly higher than CHX 0.2% (P<0.01).

Conclusion: Application of the two herbal mouthwashes was effective in improving the periodontal parameters in patients undergoing fixed orthodontic treatment.


Nanoparticles in orthodontics: A review article
Behrad Tanbakuchi, Abolghasem Bahador,
Volume 31, Issue 2 (9-2018)
Abstract
Background and Aims: The purpose of this study was to investigate the application of nanoparticles in orthodontics.
Materials and Methods: This study was conducted using a review method by searching Scopous, Google Scholar and Web of science. Key words (Nano silver, Nano ZnO, Nano Chitosan, Nano Curcumin and Nanoparticles) were used. These searches were limited to the English ariticles after the year 2010.
Conclusion: According to the published studies, silver nanoparticles, curcumin, titanium oxide, chitosan, zinc oxide, quaternary ammonium derivatives exhibit appropriate antibacterial properties. Further studies are recommended to investigate the effect of each of these nanoparticles on the bond strength. In order to reduce the decay, there is lack of evidences regarding the addition of ACP nanoparticles and nanoparticles of calcium- phosphate and fluoride. Therefore, further studies are recommended. Studies have shown that the addition of zinc oxide nanoparticles to orthodontic wires could reduce the friction between the wire and the bracket. While, adding titanium oxide nanoparticles to bracket increased the friction. Although, evidences in this regard are inadequate but it seems that nanoparticulates are less toxic than conventional materials.aa

Evaluation of personality traits, body image and self-concept in the candidates for orthodontic treatment in Tabriz-Iran
Vahid Nemati, Reza Shrgi, Nastaran Mansoureiyeh,
Volume 35, Issue 0 (5-2022)
Abstract
Background and Aims: Malocclusion in orthodontics is one of the dental and jaw abnormalities that can cause psychosocial and social problems. Personality traits, body image, and self-concept are different in orthodontic applicants due to the different effects of malocclusions on appearance and psychological well-being. The aim of this study was to investigate the personality traits, body image, and self-concept in patients seeking orthodontic treatment in Tabriz-Iran in 1400.
Materials and Methods: The statistical population of the study included all patients requesting orthodontic treatment whom were referred to one of the orthodontic clinics in Tabriz during 1399-1400. This study was performed on 149 patients seeking orthodontic treatment (127 females and 22 males) by Convenience Sampling method. Neo personality traits, the Body Image Concern, and Marsh body self-concept questionnaires were used. SPSS software was used for data analysis.
Results: According to the results, neuroticism, agreement, conscience, extraversion and openness to experience were high in orthodontic patients (P<0.05). The average dissatisfaction with body image was high (P<0.05). Also, the body outside self-concept was low and the self-esteem was high (P<0.05).
Conclusion: Personality factors, body image, and self-concept are three effective psychological characteristics in patients seeking orthodontic treatment. Therefore, the request for orthodontic treatment is largely due to psychological factors such as differences in personality traits, body image, and self-concept.

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