A study of the dental pulp cavity of mandibular first permanent molars in the Kuwaiti population

1998 ◽  
Vol 24 (2) ◽  
pp. 125-127 ◽  
Author(s):  
Essam I. Zaatar ◽  
Salem A. Al Anizi ◽  
Yousef Al Duwairi
2001 ◽  
Vol 68 (4) ◽  
pp. 294-299 ◽  
Author(s):  
Osamu Shinozuka ◽  
Goro Sekiguchi ◽  
Yasuka Tamamori ◽  
Minoru Inada ◽  
Tsuneyoshi Yamazaki ◽  
...  

2018 ◽  
Vol 19 (5) ◽  
pp. 141
Author(s):  
L R S O Schliebe ◽  
M T H Ribeiro ◽  
A B F Vilela ◽  
R B Price ◽  
C J Soares

Avaliou-se o efeito da fonte de luz e microcirculação pulpar (MP) simulada na geração de calor na câmara pulpar (CP) sob restaurações de resina composta inseridas em incremento único. Duas fontes de luz multi espectros (Bluephase G2, Ivoclar e VALO Cordless, Ultradent) foram caracterizadas com MARC-Resin Calibrator (BlueLight), a potência radiante com medidor de potência de laboratório e grau de conversão (GC) foi avaliado, utilizando FTIR. 40 molares humanos tiveram a coroa seccionada gerando preparo oclusal plano com 2 mm de dentina. Restaurações foram feitas com sistema adesivo auto-condicionante (Clearfil SE Bond, Kuraray) e resina composta bulk fill fluida (SDR, Dentsply) ou regular (AURA, SDI). A temperatura na CP foi medida com termopar tipo-J, na presença ou ausência de MP. Os dados foram analisados com ANOVA e teste Tukey (a0,05). A irradiância e a potência sofreram atenuação significativa com 3 mm de resina composta sobre os 2 mm de dentina remanescente. Bluephase obteve maior irradiância e potência que o VALO. As resinas e fontes de luz avaliadas influenciaram o GC, porém com valores que confirmam adequada polimerização. Simulação da MP reduziu o aumento de temperatura na CP. Maior aumento de temperatura ocorreu na fotoativação do adesivo. As fontes de luz foram diferentes com o VALO resultando em menor variação de temperatura na ativação do adesivo apenas na ausência de MP. SDR permitiu maior transmissão de luz e alcançou maior GC que AURA. O ponto crítico de temperatura foi na fotoativação do sistema adesivo, sendo que a presença de MP minimiza estes efeitos.Palavras-chave: Temperature. Dental Pulp Cavity. Adhesives.


ORL ro ◽  
2017 ◽  
Vol 4 (37) ◽  
pp. 46
Author(s):  
Irina-Maria Gheorghiu ◽  
Loredana Mitran ◽  
Alexandru A Iliescu ◽  
Sânziana Scărlătescu ◽  
Paula Perlea ◽  
...  

2019 ◽  
Vol 31 (1) ◽  
pp. 1-8
Author(s):  
Samah F. Al-Qazzaz ◽  
Abeer M. Hassan

Background: Molars and premolars are considered as the most vulnerable teeth of caries attack, which is related to the morphology of their occlusal surfaces along with the difficulty of plaque removal. different methods were used for early caries detection that provide sensitive, accurate preoperative diagnosis of caries depths to establish adequate preventive measures and avoid premature tooth treatment by restoration. The aim of the present study was to evaluate the clinical sensitivity and specificity rates of DIAGNOdent and visual inspection as opposed to the ICDAS for the detection of initial occlusal caries in noncavitated first permanent molars. Materials and Methods: This study examined 139 occlusal surface of the first permanent molar pooled from fifty patients aged 8-9 years by three methods. The selected criteria include one occlusal site per tooth (first permanent molars) with carious lesions range from 0 to 3 according to ICDASII (gold standard) visual criteria then the clinical sensitivity and specificity of visual inspection according to Ekstrand et al.in 1997 and DIAGNOdent were performed. . Results: the highest correlation was found between the ICDASII and DIAGNOdent. The sensitivity of the DIAGNOdent for the enamel caries detection (D1) was better than that of visual inspection. The sensitivity and the specificity for the DIAGNOdent at D3 threshold were better than the D1 threshold and the visual inspection method. Conclusion: DIAGNOden pen can be used as a tool for early caries detection in cases of difficult diagnosis that provide good additional sensitivity to the visual inspection.


2018 ◽  
Vol 14 (65) ◽  
pp. 068
Author(s):  
V. V. Ivanchyshyn ◽  
P. A. Hasiuk ◽  
U. O. Stadnyk ◽  
A. B. Vorobets ◽  
N. V. Malko ◽  
...  

Author(s):  
T. N. Tserakhava ◽  
N. V. Shakavets ◽  
E. I. Melnikava ◽  
M. I. Klenovskaya ◽  
D. N. Naumovich ◽  
...  

Relevance. Prevention of caries of the first permanent molars is one of the most relevant problems in pediatricdentistry.Purpose – to develop an algorithm for prevention of first permanent molars caries in children with differentlevels of caries risk.Materials and methods. The article presents the results of the implementation of the algorithm for prevention of first permanent molars caries in children with different levels of caries risk. This algorithm includes a comprehensive assessment of the values of indices dmft, DMFT, OHI-S, and the patient's health group is also taken into account. The study involved 253 children aged 6-7 years divided into 4 groups: 3 groups of children depending on the health group and the control group. 3 subgroups were identified in each group – with a low, medium, and high caries risk. We developed preventive measures schemes were for children of each group including training in oral hygiene; controlled and home toothbrushing using fluoride-containing toothpastes; applications of varnishes containing fluoride, calcium, phosphates from 2 to 3 times a year; fissure sealing of the first permanent molars. We carried out these activities were for 24 months, and then evaluated theirs effectiveness. Children in the control group were trained in oral hygiene. The clinical effectiveness of medical prophylaxis was evaluated by changes in the above clinical indicators.Results. In group of children with medium caries risk the increase in caries was 0.09, and the reduction in caries was 89.65%. In children with a low and high caries risk no increase in caries was observed; the reduction in the intensity of caries was 100%. A significant decrease in OHI-S oral hygiene index values was noted in all groups (p < 0.05). We noted high preventive efficacy of fissures sealing in the first permanent molars. No occlusal surface caries developed in sealed fissures.Conclusions. The application of the proposed preventive schemes in patients demonstrates high efficacy of fluoride and calcium-containing varnishes and sealing the fissures of the first permanent molars. 


2021 ◽  
pp. 146531252098287
Author(s):  
Adam C Jowett

This paper describes the orthodontic treatment of two cases that were successful in winning the British Orthodontic Society (BOS) Membership in Orthodontics (MOrth) Cases Prize in 2019. The first case describes the management of a 12-year-old girl with a Class II division 2 malocclusion complicated by moderate upper and lower arch crowding, multiple unerupted teeth, restored lower first permanent molars, pseudo-transposition of the lower left lateral incisor and canine, and diminutive upper lateral incisors. Treatment involved a combination of an upper removable appliance followed by upper and lower preadjusted edgewise fixed appliances. Anteroposterior correction and overbite reduction was achieved with triangular Class II elastics with posterior occlusal disengagement. Both upper permanent canines were exposed and aligned, and the diminutive upper incisors built up with resin-based composite. Treatment was completed over a period of 23 months. The second case describes the management of a 13-year-old boy with a Class II division 2 malocclusion complicated by severe upper and lower arch crowding with unerupted UR5, UL4, LR3, rotated LR5, an increased overbite complete to tooth, buccally displaced upper canines and hypoplastic upper first premolars. Treatment involved a first phase of functional appliance therapy, followed by the extraction of UR4, UL4, LL5, LR4 and upper and lower preadjusted edgewise fixed appliances over a 28-month period.


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