Abstract:
:The purpose of this study was to clarify whether the reverse cycle during chewing is abnormal in children with primary dentition. Children with normal primary dentition (N = 23; 5.5 +/- 0.8 years) and female adults (N = 25; 20.7 +/- 1.9 years) participated in this study. Chewing movement was recorded using an opto-electronic analysis system with six degrees-of-freedom (TRI-MET, Tokyo-shizaisha; Tokyo, Japan). Each subject was given a stick of chewing gum (new TRIDENT, WARNER-LAMBERT CO., Morris Plains, NJ, USA) and instructed to chew it normally. Starting from the maximum intercuspal position, each chewing sequence was recorded over a period of 20 s. A custom computer program identified individual chewing cycles. Frontal views were used to distinguish seven types of cycle shapes according to Ahlgren (Acta Odontol Scand, 24, 1966, 1-109; Acta Odontol Scand, 25, 1967, 3-13). Multilevel statistical models evaluated differences between children and adults. In the adults, type II cycles that initially opened towards the balancing side and then moved towards the working side were the most common, and the closing pathway was lateral to the opening pathway. In the children, type V (reverse) cycles that opened towards the working side were most common, the closing pathway was medial to the opening pathway, and there was a smaller lateral component during opening and closing than in adults (P < 0.05). We conclude that the reverse cycle is not abnormal because normal children with primary dentition have a smaller lateral component and difficulty in controlling asymmetric muscle activity.
journal_name
J Oral Rehabiljournal_title
Journal of oral rehabilitationauthors
Saitoh I,Yamada C,Hayasaki H,Maruyama T,Iwase Y,Yamasaki Ydoi
10.1111/j.1365-2842.2009.02006.xsubject
Has Abstractpub_date
2010-01-01 00:00:00pages
26-33issue
1eissn
0305-182Xissn
1365-2842pii
JOR2006journal_volume
37pub_type
杂志文章abstract::There is a paucity of guidelines for the dental profession to assess failure of endodontic therapy. While a successful treatment can be well defined by the absence of apical periodontitis and clinical symptoms after a period of observation, failed treatment has escaped a distinct standing over the years. This article ...
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更新日期:2011-11-01 00:00:00
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journal_title:Journal of oral rehabilitation
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更新日期:2011-06-01 00:00:00
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journal_title:Journal of oral rehabilitation
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pub_type: 杂志文章
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更新日期:1987-11-01 00:00:00
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journal_title:Journal of oral rehabilitation
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更新日期:2007-05-01 00:00:00
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journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,评审
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更新日期:1995-08-01 00:00:00
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journal_title:Journal of oral rehabilitation
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更新日期:2017-12-01 00:00:00
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更新日期:1997-04-01 00:00:00
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journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1985.tb01546.x
更新日期:1985-09-01 00:00:00
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journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1983.tb00105.x
更新日期:1983-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/j.1365-2842.1986.tb00665.x
更新日期:1986-07-01 00:00:00
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journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,随机对照试验
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更新日期:2009-12-01 00:00:00
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更新日期:2006-11-01 00:00:00
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更新日期:1988-07-01 00:00:00
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journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1975.tb01533.x
更新日期:1975-10-01 00:00:00
abstract::This in vitro study compared marginal gap formation in class II resin composite restorations. Forty caries-free extracted molars were prepared in a standardized manner for class II restoration by one of four methods: bulk- or incrementally-placed light-activated resin composite (Amelogen), and bulk- or incrementally-p...
journal_title:Journal of oral rehabilitation
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更新日期:2003-10-01 00:00:00
abstract::The summarized scanning electron microscopic-supported micromorphologic data of a 10-year longitudinal clinical study of GIC/Hybrid composite posterior restorations is reported. The aim of this study was to compare the results to USPHS-compatible clinical criteria of the CPM index and to analyse the deterioration patt...
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abstract::This study examined the differences in the masticatory function of patients with temporomandibular disorder (TMD) in Korea. The experimental groups were as follows: 23 patients with painful arthralgia classified as pain group according to the research diagnostic criteria for temporomandibular disorder (RDC/TMC) and 28...
journal_title:Journal of oral rehabilitation
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更新日期:2011-07-01 00:00:00
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journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
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更新日期:2009-10-01 00:00:00
abstract::Acoustic evaluation is valuable for guiding the treatment of maxillofacial defects and determining the effectiveness of rehabilitation with an obturator prosthesis. Model simulations are important in terms of pre-surgical planning and pre- and post-operative speech function. This study aimed to evaluate the acoustic c...
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doi:10.1111/joor.12306
更新日期:2015-09-01 00:00:00