活動義齒之軟硬食咀嚼效率評估
Date Issued
2003
Date
2003
Author(s)
蕭裕源
DOI
912314B002165
Abstract
The chewing efficiency of hard food
mastication had been studied in our previous
projects, and that of soft food chewing has
also been intensively studied in our project
of 2001. All the previous studies were on
human subjects with complete dentition. The
purpose of this study was to apply a
hydroxyapatite(HA) containing chewing
gum to observe the chewing efficiency of
soft food in both complete dentition subjects
and subjects with partial removable dentures.
Fourteen young subjects (7 males and 7
females, aged from 18 to 25 years old)
having complete dentition and healthy
TMJ and facial muscles were observed.
They were asked to chew an HA containing
chewing gum block for 30 times. The gum
boluses were then frozen and sectioned and
the distribution the HA in a bolus section
was observed and compared. Another 2
subjects having missing posterior teeth in
one quardant and restored with a unilateral
removable partial denture were also
observed for comparison. In this report,
dental clutch attachment and skin surface
marks were applied on each subject during
chewing observation. The comparison of
measurement accuracy was compared first.
It was found that tracing skin mark on the
chin showed significantly wider opening
range, while not in lateral movement and
chewing rate. However, the gum chewing
efficiency in subjects with dental clutch was
not significantly lower than in subjects with
chin marks only. In 30th chewing stroke,
50% HA homogeneity was found. The
chewing efficiency of the denture wearers
was significantly lower than that of natural
2
dentition subjects. Based on those findings,
it can be concluded that dental clutch may
affect the maximum jaw opening movement,
but the lateral movement and rhythm and
velocity of jaw movement are not affected.
The preliminary results also showed that the
stability of the denture is the key factor for
gum chewing ability. The attachment of
dental clutch on lower incisors might cause
incomplete sealing of the lips during
chewing, while it would not affect the ability
of gum chewing significantly.
Subjects
Chewing gum chewing
Chewing efficiency
Dental clutch tracing
Chin marks
Free end denture
SDGs
Publisher
臺北市：國立臺灣大學醫學院口腔生物科學研究所
Type
journal article
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