Tooth Size Discrepancies in Libyan Class I and II Orthodontic Patients Cross Sectional Retrospective Study

2018 ◽  
Vol 03 (02) ◽  
pp. 12-16
Author(s):  
Iman A.G. Abdelgader ◽  
2019 ◽  
Vol 90 (2) ◽  
pp. 216-223 ◽  
Author(s):  
Aaron M. Crossley ◽  
Phillip M. Campbell ◽  
Larry P. Tadlock ◽  
Emet Schneiderman ◽  
Peter H. Buschang

ABSTRACT Objective: To determine whether apical base size is related to dental crowding. Materials and Methods: Digital scans of dental casts were taken of 75 untreated Class I adults to measure maxillary and mandibular tooth size, dental arch perimeters, intermolar widths, and intercanine widths. Cone beam computed tomography (CBCT) images were used to measure the apical base of the maxilla and mandible, including the total cross-sectional area, five basal arch perimeters and five basal arch widths. Principal components factor analyses were performed to evaluate the relationships between the apical base size and tooth-size-arch-length discrepancies (TSALD). Results: The dental arch and maxillary apical base measures were significantly larger in males than females. There were only limited sex differences in mandibular apical base size. The dental arch measurements were smaller in subjects with greater upper and lower TSALD. Maxillary and mandibular apical base dimensions were positively interrelated. Low-to-moderate correlations were found between the size of the maxillary apical base and TSALD. The size of the mandibular apical base was not related to upper or lower TSALD. Tooth size showed little to no relationship with TSALD. Conclusions: Although maxillary apical base size is related to maxillary and mandibular crowding in subjects with Class I malocclusion, mandibular apical base size is not.


Author(s):  
Nabila Anwar ◽  
Gazi Shamim Hasan

Aims: The present cross sectional study was carried out to investigate the effect of first premolar extraction on tooth size discrepancies (TSD) in an orthodontic population seeking treatment at orthodontic department, BSMMU.Material and methods: Mesiodistal tooth widths were measured on 50 pair of pretreatment and post treatment dental casts of subjects with Class I variation – Class I with bimaxillary proclination, and Class I crowding. The overall ratios and tooth-size discrepancies were determined before and after 1st premolar extractions. Before and after extractions, the subjects were divided into Bolton small (BS), Bolton normal (BN) and Bolton large (BL) overall ratio groups categorized by the Bolton standard deviation definition.Results: The Bolton overall ratio after 1st premolar extraction was smaller than those before extraction in each group. Some of the patients in the BN group and BB group were moved into the BS group and BN group respectively after 1st premolar extraction. A tooth size discrepancy occurred in some patients with normal overall ratios  after premolar extractions, but a tooth size discrepancy might be corrected in some patients with big overall ratios  after premolar extraction.Conclusion: Orthodontists should take into account the following when devising a treatment plan for premolar extractions, overall ratios might decrease and remain normal, and clinically significant tooth-size discrepancies could change mutually after extractions.Ban J Orthod & Dentofac Orthop, April 2015; Vol-5 (1-2), P.13-16


Author(s):  
Hasan Sabah Hasan ◽  
Ayshan Kolemen

Aim: Aims of this study were to assess the pattern of malocclusion in Erbil City, Kurdistan region- Iraq. Methods: A retrospective study includes 1212 patients (589 males and 623 females) that attended orthodontic department at the khanzad polyclinic teaching center / Erbil city, Iraq, aged 11-17 years old with a mean age of 13.49 ±1.02 years that randomly selected. The normal occlusion, malocclusion, overjet, overbite, spacing, crowding, cross bite, midline shifting and midline diastema were examined. Results: Study demonstrated that 309 (25.5%) of patients had normal occlusion. Class I malocclusion was found in 655 (72.5%), class II was found in 176 (19.5%), and class III malocclusion 72 (8.0%) patients of all examined. Crowding and midline shifting were observed more frequently in females, however, normal bite and posterior open bite were observed more frequently in males and normal crossbite more frequently in both genders. Conclusion: Results of this study showed class I molar relationship was the most prevalent type of occlusion in Erbil City, Kurdistan Region-Iraq area and the most prevalent malocclusion was crowded.


2019 ◽  
Vol 37 (3) ◽  
pp. 119-123
Author(s):  
Sufia Nasrin Rita ◽  
Mahdee Hasan ◽  
Partha Protim Dhar ◽  
Maruf Hossain Abrar ◽  
SM Anwar Sadat

The aim of this study was to determine the pattern of individual traits of malocclusion, including sagittal molar relationship, overbite, overjet, crowding, spacing, cross bite, missing tooth, impacted tooth and extra tooth of upper and lower jaws in patients attended in Orthodontic Department of a Tertiary Level Hospital. This cross-sectional study included orthodontic patients who visited the department of Orthodontics and Dentofacial Orthopedics in Sapporo Dental College and Hospital from January 2013 to February 2018. Among the study population comprised of 371 patients the females were 57.1% and the males were 42.1%.Among them, 6.7% belonged to 6 to 11 years, 20.5% belonged to 12 to 17 years and the remaining 72.8% were of 18-35 years of age . Angles Class I malocclusion was seen to be the most prevalent (64.2%). In incisor classification, Class I malocclusion was seen to be the most prevalent (38.3%). Increase in overjet, deep overbite, crossbite, crowding and spacing were found in 35.34%, 40.3%, 24.3%, 58.2% and 38.5% of the patients respectively. J Bangladesh Coll Phys Surg 2019; 37(3): 119-123


2019 ◽  
Vol 87 (25) ◽  
Author(s):  
Lara Thaiane Souza Pereira ◽  
Taynara Cassimiro de Moura Alves ◽  
Nathalya da Silva Louro ◽  
Nayara Franklin Cesar ◽  
Juliana das Dores Ferreira ◽  
...  

O objetivo deste artigo é analisar as queixas de nutrizes que buscaram atendimento em um BLH e fatores associados.Trata-se de um estudo descritivo, analítico, transversal, retrospectivo, cuja população é composta por 1.709 nutrizes quebuscaram atendimento no período de Janeiro a Dezembro de 2016. Para a coleta de dados, utilizaram-se as fichas deatendimento do BLH. As principais queixas que levaram as nutrizes a buscarem atendimento no BLH relacionam-se àdificuldade com a técnica de amamentação (41,9%) e a problemas mamários, como o ingurgitamento mamário (27,1%) eo trauma mamilar (18,1%). A necessidade de auxílio na técnica de amamentação esteve associada às seguintes condiçõesrelativas à nutriz: ser procedente da capital (p=0,001), apresentar mais de oito anos de estudo (p=0,040), ter uma ocupação (p=0,010), ser primípara (p=<0,001), optar pela realização de parto cesárea (p=<0,001) e ter experiência préviacom amamentação (p=0,004). Houve associação entre ingurgitamento mamário e primiparidade (p=0,038), além do fatode a nutriz ter contado com o apoio ao aleitamento materno na maternidade (p=0,021). O estudo possibilitou verificar aimportância dos BLH no processo de lactação, um período em que as mulheres ficam ansiosas, necessitam de informaçõesconfiáveis e apresentam muitas queixas em relação à lactação.PALAVRAS-CHAVES : Aleitamento materno, Bancos de leite, Saúde da mulher. Abstract: The aim of this article is to analyze the complaints of lactating mothers who sought care in a HMB and associatedfactors. It is a descriptive, cross-sectional, retrospective study, whose population is composed of 1.709 lactating mothers whosought care in the period from January to December the 2016. For the data collection, were used the service records ofthe HMB. The main complaints that led the lactating mothers to seek care at HMB were related to the difficulty with thebreastfeeding technique (41.9%) and to breast problems, such as breast engorgement (27.1%) and nipple trauma (18,1%). Theneed for breastfeeding technique was associated to the following nutrient conditions: coming from the capital (p = 0.001),presenting more than eight years of study (p = 0.040), having an occupation (p = 0.010), being primiparous (p = <0.001), optfor cesarean (p = 0.001) and to have previous experience with breastfeeding (p = 0.004). There was an association betweenbreast engorgement and primiparity (p = 0.038), in addition to the fact that the mother had support for breastfeeding in thematernity ward (p = 0.021). The study made it possible to verify the importance of HMBs in the lactation process, a period inwhich women become anxious, require reliable information and have many complaints about lactation.Keywords: Breast feeding, Milk banks, Women’s health


Author(s):  
Sarwat Memon

Background: The palatal rugae are special constructions that are inalterable in their position and pattern during the lifestyles of an individual. This imparts them an exceptional role in the forensic dentistry and may play potential role in malocclusion identification. This study was aimed to see association of rugae pattern with sagittal skeletal malocclusion in orthodontic patients visiting tertiary care hospital. Methods: This cross-sectional examination was completed on pretreatment records (lateral Cephalometric radiographs and maxillary dental casts) of 384 subjects at the orthodontic department of Ziauddin Dental Hospital, Karachi. The study duration was from January to July 2019. The samples were sub-divided into three sagittal skeletal groups based on ANB angle proposed by Steiner’s on lateral Cephalometric radiographs (Class I with ANB angle between 0° to 4°; Class II: ANB angle greater than 5°; Class III: ANB angle less than 0°). The shapes of three most-anterior primary rugae were then evaluated bilaterally using Kapali et al., Classification. Chi Square test was applied to find association of rugae pattern among sagittal skeletal malocclusions groups. Results: Circular and curved rugae shapes were the most prevalent in all skeletal malocclusions. The primary palatal rugae pattern was seen to be significantly different among three skeletal malocclusion groups (p<0.05). The right and left sided palatal rugae pattern showed significant difference in all three skeletal malocclusion groups (p<0.05). Conclusion: The present study showed no specific palatal rugae pattern associated with sagittal skeletal malocclusion. Further studies on larger sample and use of modern 3D technologies to scan the maxillary casts are required for results that are more precise.


Healthcare ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 413
Author(s):  
Hui-Ling Chen ◽  
Jason Chen-Chieh Fang ◽  
Chia-Jung Chang ◽  
Ti-Feng Wu ◽  
I-Kuan Wang ◽  
...  

Background. Previous studies have shown that environmental cadmium exposure could disrupt salivary gland function and is associated with dental caries and reduced bone density. Therefore, this cross-sectional study attempted to determine whether tooth decay with tooth loss following cadmium exposure is associated with some dental or skeletal traits such as malocclusions, sagittal skeletal pattern, and tooth decay. Methods. Between August 2019 and June 2020, 60 orthodontic patients with no history of previous orthodontics, functional appliances, or surgical treatment were examined. The patients were stratified into two groups according to their urine cadmium concentrations: high (>1.06 µg/g creatinine, n = 28) or low (<1.06 µg/g creatinine, n = 32). Results. The patients were 25.07 ± 4.33 years old, and most were female (female/male: 51/9 or 85%). The skeletal relationship was mainly Class I (48.3%), followed by Class II (35.0%) and Class III (16.7%). Class I molar relationships were found in 46.7% of these patients, Class II molar relationships were found in 15%, and Class III molar relationships were found in 38.3%. The mean decayed, missing, and filled surface (DMFS) score was 8.05 ± 5.54, including 2.03 ± 3.11 for the decayed index, 0.58 ± 1.17 for the missing index, and 5.52 ± 3.92 for the filled index. The mean index of complexity outcome and need (ICON) score was 53.35 ± 9.01. The facial patterns of these patients were within the average low margin (26.65 ± 5.53 for Frankfort–mandibular plane angle (FMA)). There were no significant differences in the above-mentioned dental indices between patients with high urine cadmium concentrations and those with low urine cadmium concentrations. Patients were further stratified into low (<27, n = 34), average (27–34, n = 23), and high (>34, n = 3) FMA groups. There were no statistically significant differences in the urine cadmium concentration among the three groups. Nevertheless, a marginally significant p-value of 0.05 for urine cadmium concentration was noted between patients with low FMA and patients with high FMA. Conclusion. This analysis found no association between environmental cadmium exposure and dental indices in our orthodontic patients.


2021 ◽  
Vol 55 (2) ◽  
pp. 184-189
Author(s):  
RSVM Raghu Ram ◽  
I Ranganayakulu ◽  
K Anand Viswanadh ◽  
TSS Manikanta Kumar ◽  
C Viswa Chaitanya ◽  
...  

Objectives: To evaluate the level of knowledge, understanding, and impact of the coronavirus disease 2019 (COVID-19) pandemic on adult patients regarding their ongoing fixed orthodontic treatment. Subjects and Methods: A cross-sectional and descriptive survey was conducted on 108 adult patients undergoing fixed orthodontic treatment at GSL Dental College (GSLDC), India. All the candidates were aged 18 years and above, who were in lockdown due to the COVID-19 pandemic and devoid of treatment. Results: Among the patients 43.5% were male and 56.5% were female; 22.3% were not at all aware that the COVID-19 virus spreads quickly in a dental setup; 64.8% were definitely willing for their status disclosure and to undergo pretreatment screening; 71.3% were definitely willing to adhere to strict appointment timings for adequate sanitization of the clinical area; 60.2% thought that missed appointments during the COVID-19 pandemic would prolong their overall orthodontic treatment and affect their treatment outcome; and 51.9% were financially affected due to the pandemic. Conclusions: Not all adult orthodontic patients were in knowledge of COVID-19 cross infection. The majority were in a state of understanding and willing to follow infection-eradicating protocols. Patients’ view on overall orthodontic treatment was altered due to the psychological and financial impact of COVID-19.


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