Influence of posterior dental arch length on brain activity during chewing in patients with mandibular distal extension removable partial dentures

2014 ◽  
Vol 41 (7) ◽  
pp. 486-495 ◽  
Author(s):  
K. Shoi ◽  
K. Fueki ◽  
N. Usui ◽  
M. Taira ◽  
N. Wakabayashi
2017 ◽  
Vol 22 (6) ◽  
pp. 68-73 ◽  
Author(s):  
Alana Tavares ◽  
Emanuel Braga ◽  
Telma Martins de Araújo

ABSTRACT Introduction: Plaster dental casts are routinely used during clinical practice to access maxillary dental arch form and assist on fabrication of individualized orthodontic archwires. Recently introduced, digital model technology may offer a limitation for the obtainment of a dental physical record. In this context, a tool for dental arch form assessment for chairside use is necessary when employing digital models. In this regard, paper print of the dental arch seems thus to be useful. Methods: In the present study, 37 lower arch models were used. Intercanine and intermolar widths and dental arch length measurements were performed and compared using plaster dental casts, digital models and paper print image of the models. Ortho Insight 3D scanner was employed for model digitalization. Results: No statistically significant differences were noted regarding the measurements performed on the plaster or digital models (p> 0.05). Paper print images, however, showed subestimated values for intercanine and intermolar widths and overestimated values for dental arch length. Despite being statistically significant (p< 0.001), the differences were considered clinically negligible. Conclusion: The present study suggests that paper print images obtained from digital models are clinically accurate and can be used as a tool for dental arch form assessment for fabrication of individualized orthodontic archwires.


2017 ◽  
Vol 41 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Fatma Deniz Uzuner ◽  
Duygu Öztürk ◽  
Selin Kale Varlık

Objective: To evaluate the effects of combined rapid maxillary expansion (RME) and face mask (FM) therapy during the mixed dentition period on the dental arch length in patients with skeletal Class III malocclusion. Study Design: We evaluated pre- and post-treatment orthodontic models of 52 patients (25 girls, 27 boys) aged 8–12 years with skeletal Class III malocclusion(ANB&lt;0) accompanied by maxillary transverse deficiency and retrognatism treated by bonded RME-FM therapy for a mean duration of 8 months. Palatal rugae, the cusp tips of permanent first molars, deciduous molars/permanent premolars, deciduous canines and the incisal edges of permanent central incisors were marked on orthodontic models, which were then photocopied. Inter-molar, inter-premolar and inter-canine widths; the arch length; the arch depth and molar and incisor sagittal movements were measured on these photocopies. Statistical comparisons were made using paired t-tests. Results: Inter-molar, inter-premolar and inter-canine widths and the arch length showed significant increases after treatment, while the arch depth showed a significant decrease (p&lt;0.001 for all). Conclusions: With the study limitations, our results suggest that combined RME-FM therapy increases the arch length in the mixed dentition of patients with skeletal Class III malocclusion.


1992 ◽  
Vol 102 (5) ◽  
pp. 427-433 ◽  
Author(s):  
Adrian Becker ◽  
Reuben M. Karnei-R'em ◽  
Shulamith Steigman

2020 ◽  
Vol 53 (2) ◽  
pp. 93
Author(s):  
Atiek Driana Rahmawati ◽  
Iwa Sutardjo Rus Sudarso ◽  
Dibyo Pramono ◽  
Eggi Arguni

Background: Dental arch form and dimension are fundamental factors in orthodontic diagnosis and treatment planning. Its dimension will increase, due to the eruption of teeth, and is also affected by ethnicity, nutrition, systemic disease, hormonal factors, and gender. Many teeth are erupting in 8–10-year-old children. Purpose: This study aimed to assess the correlation between age and dental arch dimension of Javanese children in good nutritional status for consideration of orthodontic treatment. Methods: This was a cross-sectional study with 66 children aged 8–10 years in a normal dentoskeletal relationship, grouped based on age as the subject. Each group consisted of 22 pairs of dental study models, male and female. Anterior and posterior size of dental arch length were measured by digital sliding calipers from the midpoint between the right and left permanent central incisors perpendicular to the inter-canines and inter-molars. The width was measured at the inter-canines and inter-molars. Results: Pearson’s correlation test showed that there were significant correlations between age and maxillary dental arch lengths (p = 0.01, r = 0.31 for anterior, and p = 0.043, r = 0.249 for posterior). Conclusion: Based on this study, it can be concluded that there was a positive correlation between age and dental arch length of 8–10-year-old Javanese children in good nutritional status, especially in maxillary dental arch length.


e-GIGI ◽  
2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Rahmaya E. U. Paputungan ◽  
P. S. Anindita ◽  
Krista V. Siagian

Abstract: Mandibular arch size and form are required in order to establish proper diagnoses and orthodontic treatment plans. Mandibular dental arch is a factor affecting maximum stability of treatment outcomes. The purpose of this study was to determine means of mandibular arch size and form in Mongondow ethnic group.This research was classified into descriptive observational with cross sectional study. Sample of this research were 35 peoples aged 18-25 years at the original Mongondow ethnic group based on two generation of grandparents. Samples were taken by using purposive sampling method. The measurement of dental arch length and width were done in sagittal and transversal direction based on the Raberin’s method. Results showed that the average values of mandibular arch length in Mongondow ethnic group which categorized as depths of canines (L31), depths first molars (L61) and depths of second molars were 5.18 mm;24.26 mm; and 39.34 mm respectively. The average values of mandibular arch width which categorized as inter canines (L33), inter first molars (L66) and inter second molars (L77) were 27.38 mm, 45.60 mm and 53.59 mm respectively. The most mandibular arch form of Mongondow ethnic group was mid (51.4%) and the less of this group was pointed (5.7%).Keywords: dental arch size, dental arch form, mandibular, Mongondow ethnic groupAbstrak: Ukuran dan bentuk lengkung gigi rahang bawah sangat diperlukan dalam menentukan diagnosa dan rencana perawatan ortodontik yang tepat. Lengkung gigi rahang bawah merupakan faktor yang sangat berpengaruh dalam mempertahankan stabilitas hasil perawatan ortodonti. Tujuan penelitian ini yaitu untuk mendapatkan rerata ukuran dan bentuk lengkung gigi rahang bawah pada suku Mongondow. Jenis penelitian ini yaitu observasional deskriptif dengan desain penelitian cross sectional study. Sampel yang diperoleh sebanyak 35 orang suku Mongondow asli dari dua generasi yag berusia 18-25 tahun. Pengambilan sampel dilakukan dengan menggunakan teknik purposive sampling. Pengukuran panjang dan lebar lengkung gigi diukur dalam arah sagital dan transversal pada model studi/hasil cetakan rahang bawah dengan metode Raberin. Hasil pengukuran diperoleh rerata ukuran panjang lengkung gigi rahang bawah pada suku Mongondow yang dikategorikan sebagai kedalaman kaninus (L31), kedalaman molar pertama (L61) dan kedalaman molar kedua (L71) berturut-turut yaitu 5,18 mm; 24,26 mm; dan 39,34 mm. Rerata ukuran lebar lengkung gigi yang dikategorikan sebagai lebar interkaninus (L33), lebar intermolar pertama (L66) dan lebar intermolar kedua (L77) berturut-turut yaitu 27,38 mm; 45,60 mm dan; 53,59 mm. Bentuk lengkung gigi rahang bawah pada suku Mongondow paling banyak yaitu bentuk mid (51,4%) dan yang paling sedikit yaitu bentuk pointed (5,7%). Kata kunci: ukuran lengkung gigi, bentuk lengkung gigi, rahang bawah, suku Mongondow


e-GIGI ◽  
2015 ◽  
Vol 3 (2) ◽  
Author(s):  
Dwi R. A. Alpiah ◽  
P. S. Anindita ◽  
Juliatri .

Abstract: Mandibular dental arch size and form are required to establish proper diagnosis and treatment plans in order to achieve maximum stability of treatment outcomes. This study aimed to determine the means of mandimular dental arch size and form in Minahasa ethnic. This study used 25 models of mandibular from Minahasan students at Dentistry Sam Ratulangi University selected by inclusion and exclusion criterion. The models were measured in sagittal (dental arch length) and transversal (dental arch width) direction based on Raberin’s method. The result of the dental arch length means of mandibular arch of Minahasan students in sagittal direction L31, L61, and L71 were 5.12, 23.47, and 38.78 mm consecutively, while the dental arch width in transversal direction L33, L66 and L77 were 26.02, 46.86, and 55.90 mm. The distribution of mandibular dental arch form were mid 36%, narrow 24%, wide 20%, flat 12%, and pointed 8%.Keywords: dental arch length and width, dental arch form, mandibular, Minahasan ethnicAbstrak: Ukuran dan bentuk lengkung gigi rahang bawah sangat diperlukan dalam menentukan diagnosis dan rencana perawatan yang tepat. Hal ini bertujuan untuk mendapatkan stabilitas hasil perawatan yang maksimal. Tujuan penelitian ini adalah untuk mendapatkan rerata ukuran dan bentuk lengkung gigi rahang bawah pada suku Minahasa.Penelitian ini menggunakan 25 model studi rahang bawah yang diperoleh dari mahasiswa suku Minahasa di PSPDG FK Unsrat yang sesuai dengan kriteria inklusi dan eksklusi yang telah ditentukan. Model studi yang diperoleh diukur dalam arah sagital (panjang) dan transversal (lebar) berdasarkan metode Raberin. Setelah dilakukan pengukuran, diperoleh rerata panjang lengkung gigi rahang bawah mahasiswa suku Minahasa dalam arah sagital yaitu L31, L61 dan L71 berturut-turut 5,12; 23,47; dan 38,786 mm, sedangkan rerata lebar lengkung gigi dalam arah transversal yaitu L33, L66 dan L77 sebagai berikut 26,02; 46,86; dan 55,90 mm. Distribusi bentuk lengkung gigi rahang bawah pada mahasiswa suku Minahasa di PSPDG FK Unsrat ialah mid 36%, narrow 24%, wide 20%, flat 12%, dan pointed 8%.Kata kunci: panjang dan lebar lengkung gigi, bentuk lengkung gigi, rahang bawah, suku Minahasa


Author(s):  
H Jahan ◽  
MZ Hossain

Aim: The purpose of this investigation was to examine the extent to which arch dimension or tooth size contributes to dental crowding. Materials and Methods: Two groups of dental casts were selected. Each group consisted of 30 pairs of dental casts including equal male and female samples. The first group had Class I malocclusion without crowding. The second group exhibited Class I malocclusion with dental crowding (more than 5 mm space deficiency). The following parameters were measured and used to compare the two groups: individual and collective mesiodistal widths of tooth, dental arch length, as well as buccal and lingual dental arch widths in the canine and molar regions. Results: Statistically significant differences in both tooth widths and transverse arch dimensions (widths) were found between the crowded and the normal groups. The crowded group was found to have a significantly smaller maxillary arch width and larger tooth size when compared with the uncrowded or normal group. There were no significant differences in arch length in the two groups in either the maxilla or the mandible. In comparing the anterior and overall Bolton ratios no significant difference was detected between the crowded and normal groups. Conclusion: The results of this study suggest under under two study groups (Class I skeletal base of crowded and uncrowded group) tooth size has a greater role in developing dental crowding. DOI: http://dx.doi.org/10.3329/bjodfo.v2i1.15994 Ban J Orthod & Dentofac Orthop, October 2011; Vol-2, No.1, 1-6


2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
Sara M. Al-Mashhadany ◽  
Jinan Eliewy Saloom ◽  
Mohammed Nahidh

Objectives. This study aimed at finding out whether anterior teeth angulation and inclination have a relationship with the maxillary teeth and dental arch dimensions. Methods. Fifty study models with normal occlusion were selected from the archive of the Department of Orthodontics at Baghdad Dental Faculty. Maxillary dental arch width and length at different points were determined in addition to measuring anterior teeth angulation, inclination, crown thickness, overjet, overbite, and Bolton’s ratios. The unpaired t-test and Pearson’s correlation coefficient test were used for data analysis. Results. No statistical gender differences were reported in all measurements except the dental arch widths and length where males had significantly higher mean values. Only the maxillary incisor’s inclination showed a direct weak significant correlation with the total arch length. Conclusions. The inclination of upper incisors had a minimal effect on increasing dental arch length.


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