• 디지털융복합연구
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• 제14권9호
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• pp.341-348
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• 2016

본 연구의 목적은 노인들의 저작 능력과 구강건강영향지수(OHIP-14)를 이용하여 구강건강 관련 삶의 질과의 관련성에 대하여 조사하고자 하였다. 총 195명의 노인들을 대상으로 주관적인 저작능력과 객관적인 저작능력 그리고 삶의 질에 관한 OHIP-14를 조사하였다. 저작능력이 낮을 경우 삶의 질이 나쁠 위험비가 증가하였고, 나이, 거주형태, 교육수준, 틀니의 사용을 보정한 결과 주관적 저작 능력은 삶의 질이 낮아질 위험비가 2.42배(p<0.05) 높게 나타났으며, 객관적인 저작 능력은 7.58배(p<0.001) 높은 것으로 나타났다. 본 연구에서는 저작 능력이 노인들의 삶의 질을 나타내는 OHIP-14 총 점수와 관련이 있는 것으로 나타났다. 노인들이 저작능력이 구강건강 관련 삶의 질에 영향을 미친다는 것을 확인하였다. 이에 다양한 후속 연구들이 장기적으로 진행되어 건전한 구강건강 유지와 함께 노인들의 삶의 질을 향상시키는데 도움이 되기를 바란다.

• Journal of Korean Academy of Oral Health
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• 제42권4호
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• pp.216-223
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• 2018

Objectives: The purpose of the study was to investigate factors affecting the assessment of objective and subjective masticatory ability in the elderly, and to evaluate masticatory ability assessment more accurately. Methods: A total of 112 participants were recruited after oral examination in senior citizen welfare facilities. The participants' masticatory ability was evaluated objectively (Mixing ability index; MAI), and subjectively (Key food intake ability; KFIA). Participants' general characteristics and oral health-related variables were also recorded. Based on masticatory ability assessment, participants were classified as either high or low. IBM SPSS Statistics Ver.23.0 was used for all analyses, including descriptive statistics, Chi-square test, Mann-Whitney U test, Spearman rank correlation, and Logistic regression analysis. Results: Higher masticatory ability was positively correlated with higher scores on MAI and KFIA. Additionally, there was a significant positive correlation between MAI and KFIA. When analyzing factors affecting objective and subjective masticatory ability assessments, Functional tooth units (FTUs) were revealed as a related factor. In subjective masticatory ability assessment, oral moisture, difficulty in chewing, and the Geriatric Oral Health Assessment Index (GOHAI) were also influential factors. Conclusions: In order to accurately assess masticatory ability, it is necessary to use both objective and subjective measures. Additionally, to improve the masticatory ability in the elderly, treatment should be provided to improve overall oral health and satisfaction.

• 한국융합학회논문지
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• 제13권2호
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• pp.47-54
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• 2022

본 연구는 노인의 저작 능력이 노쇠에 미치는 영향을 분석하고자 하였다. 65세 이상의 노인 224명을 대상으로 일반적 특성, 주관적 및 객관적 저작 능력, 노쇠수준을 조사하였다. 연구 결과는 다음과 같다. 첫째, 저작 능력은 연령, 교육 수준, 경제활동 여부, 거주 형태, 틀니 장착 여부에 따라 차이가 있었다. 둘째, 비노쇠 노인의 저작 능력은 노쇠 노인에 비해 통계적으로 유의하게 높았다. 셋째, 저작 능력이 좋은 대상자에 비해 저작 능력이 좋지 못한 대상자에서 노쇠가 있을 위험비는 2.33배 높았으며, 연령을 보정한 결과 저작 능력이 좋은 그룹에 비해 좋지 못한 그룹에서 노쇠가 있을 위험비는 2.30배 높게 나타났다. 이를 통해 노인의 저작 능력이 노쇠의 예측요인 중의 하나이며, 지역사회 차원의 구강건강 관리를 통해 노쇠를 예방하여 건강한 노화를 달성하는 노력이 필요할 것으로 생각한다.

• 구강회복응용과학지
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• 제28권3호
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• pp.269-276
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• 2012

임플란트 보철물의 저작능력과 관련되어 다양한 요인들이 존재하며 여기에 관해 다양한 연구가 이루어지고 있지만 대부분의 후향적 연구에서는 임플란트 저작력이 다른 유형의 보철물과 비교해서도 우수한 것으로 결론 내리고 있다. 그러나 임상적으로 임플란트 보철치료 후에 저작능력에 대해 만족하지 못하는 환자들이 간혹 있으며 이러한 저작의 불만족을 유발할 가능성이 있는 여러 가지 원인들 중 신경학적 원인에 대해 고찰해 보고자 한다. Pubmed database에서 Implant chewing ability, masticatory ability 등의 임플란트 저작과 관련된 검색어를 사용하여 검색 후 임플란트 보철물의 저작능력에 관련된 요인들 및 임상과 관련된 논문들을 선택하고 고찰하였다. 저작능력에 관한 정의, 저작능력에 관련된 요인들에 대해 고려하였으며 이러한 요인들 중 신경학적 원인과 관련된 내용을 분석 평가하였다. 치주인대(Periodontal Ligament: PDL)의 기계적감각수용기(Mechanoreceptor)는 저작운동 시 치아로부터 얻은 정보를 뇌간으로 전달하여 저작운동의 조절에 관여한다. 임플란트의 경우 치주인대의 부재로 인해 저작운동 시 저작운동 적응 능력이 떨어지며 특히 딱딱한 음식을 저작 시 이러한 현상이 두드러진다. 저작근, TMD의 mechanoreceptor 또한 저작운동에 관여하기 때문에 치주인대의 기계적감각수용기 부재를 보상할 가능성도 있으며 임플란트 주변 조직에 있는 nerve fiber가 감각능력에 관여할 수 있을 가능성에 대한 보고도 있으니 이에 대한 추가 연구가 더 필요할 것으로 사료된다.

• Journal of Periodontal and Implant Science
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• 제45권6호
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• pp.205-209
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• 2015

Purpose: Dental implants present several advantages over other tooth replacement options. However, there has been little research on masticatory function in relation to implant treatment. Therefore, the aim of the present study was to evaluate the improvement of masticatory function two weeks after implant restoration. Methods: Masticatory ability was evaluated with the subjective food intake ability (FIA) and objective mixing ability index (MAI) methods. Fifty-four subjects with first and second missing molars completed the study. The subjects were asked to complete a self-reported questionnaire about 30 different food items, and to chew wax samples 10 times both before and two weeks after implant restoration. A total of 108 waxes were analyzed with an image analysis program. Results: Dental implant restoration for lost molar teeth on one side increased the FIA score by 9.0% (P<0.0001). The MAI score also increased, by 14.3% after implant restoration (P<0.0001). Comparison between the good and poor mastication groups, which were subdivided based on the median MAI score before implant restoration, showed that the FIA score of the poor group was enhanced 1.1-fold while its MAI score was enhanced 2.0-fold two weeks after an implant surgery. Conclusions: Using the FIA and MAI assessment methods, this study showed that masticatory function was improved two weeks after implant restoration. In particular, the enhancement of masticatory function by implant restoration was greater in patients with relatively poor initial mastication than in those with good initial mastication.

• Journal of Korean Academy of Oral Health
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• 제42권4호
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• pp.159-166
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• 2018

Objectives: The aim of this study was to investigate the association between masticatory ability, oral health-related quality of life, and cognitive function in an elderly population using structural equation modeling. Methods: A total of 308 subjects, aged 65 years and over, were recruited from the senior citizen center in Daegu, South Korea and provided consent for inclusion in the study. The Korean version of the Mini-Mental State Examination (K-MMSE) was used to assess the level of cognitive function. Masticatory ability was evaluated through chewing tests, patient-perceived masticatory function and, measurement of relative occlusal forces on molar teeth using the T-Scan $III^{(R)}$ system. All data were analyzed using ${\chi}^2$ tests, t-tests, and one-way ANOVA in SPSS version 23.0 for windows. Structural equation modeling was performed using SPSS AMOS version 22.0. Results: There was a significant association between cognitive function and molar teeth occlusal force. Ability of food chewing score and patient-perceived masticatory function could affect oral health-related quality of life (P>0.05). Higher occlusal forces on molar teeth, compared to anterior teeth, positively correlated with higher cognitive function. Conclusions: These results suggest that an individual's oral health condition could affect molar teeth occlusal forces and may be related to a risk of developing dementia. Therefore, there is a need for implementing nation-wide policies to improve oral health, such as masticatory function, in the elderly population.

• The Journal of Advanced Prosthodontics
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• 제7권1호
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• pp.8-14
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• 2015

PURPOSE. To assess function by identifying changes in swallowing and masticatory performance in maxillary obturator prosthesis wearers. MATERIALS AND METHODS. Sixty subjects were recruited for the study, of which 20 were obturator wearers, 20 were completely dentulous and 20 had removable partial/complete dentures with similar Eichner's Index. Swallowing ability was evaluated with and without obturator using the "Water Drinking Test"; Masticatory performance was evaluated with the Sieve test; and maximum occlusal force was recorded with the help of a digital bite sensor. The data was analyzed using the Statistical Package for Social Science version 15.0 with a confidence level at 95%. RESULTS. Profile, behavior of drinking and time taken to drink were significantly improved (P<.001) in subjects after wearing obturator. Masticatory performance was not significantly different (P=.252) in obturator wearer when compared with dentulous or removable partial/complete denture wearer, but significantly (P<.001) high inter group difference in maximum occlusal force existed. Correlation between masticatory performance and maximum occlusal force was not significant (P=.124). CONCLUSION. Swallowing ability was significantly improved after wearing obturator but masticatory performance was not significantly different from those having similar occlusal support zone in their dentition.

• 한국치위생학회지
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• 제19권1호
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• pp.65-78
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• 2019

Objectives: This study was conducted to characterize the impact of cognitive function and oral health status on mastication in senior citizens, ${\geq}65$ years of age, using senior centers in the city of Wonju, South Korea. Methods: A cross-sectional study consisting of a simple oral examination and survey questionnaires was performed in 154 individuals. General characteristics, subjective masticatory function, objective masticatory function, cognitive function, and oral health status were collected as variables. Correlation and multiple linear regression analyses were conducted. A p-value of <0.05 was considered to be statistically significant. Results: The subjective masticatory function was scored using the 5-point Likert scale. When subjective masticatory function was analyzed in groups according to cognitive function, the mean subjective masticatory function scores were 4.31, 4.09, and 3.29 in the normal group (cognitive score of ${\geq}16$), suspected dementia group (cognitive score of 1215), and mild dementia group (cognitive score of ${\leq}11$), respectively. Thus, subjective masticatory function decreased along with decreasing cognitive function. When cognitive function, subjective masticatory function, and objective masticatory function were compared with indicators of oral health status (number of functional teeth, oral dryness), subjective masticatory function exhibited a significant positive correlation with objective masticatory function (r=0.635, p<0.01), cognitive function (r=0.292, p<0.01), and total number of functional teeth, including prosthetic appliances (dentures) (r=0.305, p<0.01). According to the regression analysis, age, sex, number of functional teeth, and cognitive function affected subjective masticatory function. Conclusions: The results of this study revealed that age, sex, number of functional teeth, and cognitive function affected subjective masticatory function, whereas oral dryness did not. Therefore, dental professionals must consider subjective masticatory function when providing oral care in senior patients with low cognitive function.

• Journal of Oral Medicine and Pain
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• 제35권2호
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• pp.135-147
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• 2010

본 연구에서는 최근 Sato 등이 고안한 mixing ability index(MAI)를 이용하여 측두하악장애 환자 중 통증이 있는 군과 무통성 관절잡음이 있는 군을 대상으로 객관적인 저작 효율을 정상인으로 구성된 대조군과 비교하고, 주관적인 평가 방법인 설문조사법 중에서 음식섭취가능지수(Food Intake Ability Index, FIA)와 저작 능력에 대한 주관적 인식도 평가(Visual Analogue Scale, VAS)를 이용하여 저작 효율을 평가하고, 구강건강과 관련된 삶의 질을 평가하기 위해 Oral Health Impact Profile(OHIP)-49K 설문조사를 시행하였다. 각 평가 방법 간의 상관성을 알아보고, 또한 통증군에 있어서는 치료 후 통증이 감소함에 따라 저작 효율의 변화 양상을 조사하여 다음과 같은 결과를 얻었다. 1. MAI, FIA, VAS는 통증군이 정상군에 비해 통계학적으로 유의하게 감소하였으며, 관절잡음군보다도 감소하여 통증군이 정상군과 관절잡음군에 비해 저작 효율이 떨어지는 것으로 나타났다(P<0.05). 관절잡음군에서는 MAI, FIA, VAS에서 정상군과 유의한 차이를 보이지 않았다. 2. 구강건강관련 삶의 질에 대한 설문지인 OHIP-49K의 경우 정상군에 비해 통증군과 관절잡음군 모두 통계학적으로 유의하게 증가하여 구강건강과 관련한 삶의 질이 떨어지는 것으로 나타났다. 3. 전체 대상자(71명)에서 객관적 저작 능력 평가 방법인 MAI와 주관적 저작 능력 평가 방법인 FIA와 VAS간에는 서로 유의성 있는 상관관계를 보였다(P<0.01). OHIP-49K에서도 MAI를 제외하고 모두 통계학적으로 상관관계가 있는 것으로 나타났다. 4. 관절잡음군에서는 FIA와 VAS에서만 통계학적으로 상관관계가 있는 것으로 나타났으며(P<0.01), 이외의 모든 항목은 상관관계가 없는 것으로 나타났다. 5. 각 평가 방법 간의 상관성에서 FIA와 VAS는 전체 대상자, 통증군, 관절잡음군 모두에서 상관관계가 있는 것으로 나타났다. 6. 통증군에서 치료 전에 비해 치료 후 통증 감소와 함께 VAS에서는 통계학적으로 유의성 있게 증가 하였다(P<0.05). 반면에 MAI에 있어서는 저작 효율이 증가하는 경향을 보였으나 통계학적 유의성은 없었다. 또한 FIA, OHIP-49K에서도 치료 전과 후 통증 감소에 따른 변화는 없는 것으로 나타났다. 이번 연구를 통하여 측두하악장애 환자에서 저작 효율을 감소시키는 주요인은 통증이며, 관절잡음은 저작 효율을 감소시키는 요인은 아니지만 삶의 질을 저하시키는 한 요인으로 작용한다는 것을 알 수 있었다. 따라서 측두하악장애 환자에서 저작 효율을 개선시키기 위해서는 우선적으로 통증을 치료하는 것이 가장 중요하며, 삶의 질을 향상시키기 위해서는 통증뿐만 아니라 관절잡음에 대한 관리도 필요할 것으로 사료된다.

• The Journal of Korean Physical Therapy
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• 제34권6호
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• pp.321-325
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• 2022

Purpose: Temporomandibular disorder (TMD) is a condition defined as pain and dysfunction of temporomandibular joints and masticatory muscles. Abnormal interconnections between temporomandibular muscles and cervical spine structures can cause the changes of postural alignment and balance ability. The aim of this study was to investigate changes in static balance ability in subjects with painrelated TMD. Methods: This study conducted on 25 subjects with TMD and 25 control subjects with no TMD. Pressure pain thresholds (PPTs) of the masseter and temporalis muscles were measured using a pressure algometer. Static balance ability was assessed during one leg standing using an Inertial Measurement Unit (IMU) sensor. During balance task, the IMU sensors measured motion and transfer movement data for center of mass (COM) motion, ankle sway and hip sway. Results: PPTs of masseter and temporalis muscles were significantly lower in the TMD group than in the control group (p<0.05). One leg standing, hip sway, and COM sway results were significantly greater in the TMD group (p<0.05), but ankle sways were not different between group. Conclusion: We suggest pain-related TMD is positively related to reduced PPTs of masticatory muscles and to static balance ability. These results should be considered together with global body posture when evaluating or treating pain-related TMD.