• 대한두경부종양학회지
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• 제34권2호
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• pp.43-46
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• 2018

Chondroid choristomais a rare tumor like lesion of normal tissue in an unusual location. Oral cavity chondroid choristoma is exceedingly uncommon. This lesion is commonly covered by normal oral mucosa and can develop during a whole lifetime. We experienced a case of 57-year-old man who presented as 6-months history of asymptomatic mass on the dorsal surface of the tongue. We performed surgical excision under local anesthesia, and the pathological diagnosis was chondroid choristoma. After surgery, patient was followed up without any recurrence and discomfort. Therefore, we report this case with a review of literature.

• 대한한의학회지
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• 제31권1호
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• pp.23-29
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• 2010

Objective: The aim of this prospective, case-controlled study was to assess the difference of the amount of tongue coating between halitosis and non-halitosis patients using a digital tongue diagnosis system (DTDS). Methods: Sixty-five patients complaining of oral malodor were recruited for the study. The level of volatile sulfur compounds (VSC) in the oral cavity of the patients was measured by a portable gas chromatography. All patients were then divided into two groups, the halitosis group ($H_2S{\geq}1.5ng$/10ml, or $CH_3SH{\geq}0.5ng$/10ml) and the non-halitosis group ($H_2S$<1.5ng/10ml and $CH_3SH$<0.5ng/10ml), according to the VSC level criteria published by Tonzetich. Tongue images of the two groups were acquired and analyzed by DTDS, followed by the analysis of the tongue coating scores. Results: The tongue coating scores of the halitosis group were significantly higher than of the non-halitosis group (P=0.033). Furthermore, the difference of the posterior tongue coating between the two groups was more significant (P=0.000). Conclusions: Halitosis patients were shown to have a thicker tongue coating than those in the non-halitosis group. Moreover, the posterior dorsum of the tongue should be observed more cautiously when dealing with halitosis patients. Also, the progress and state of the patient's symptom of halitosis as diagnosed objectively by the portable gas chromatography could also possibly be analyzed instead by the DTDS tongue coating score.

• 말소리와 음성과학
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• 제3권4호
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• pp.13-21
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• 2011

The present study investigated the effects of two different sources of prosodic strengthening, i.e., boundary and accent, in the articulation of English high front vowels, /i/ and /I/. The vowels were investigated in vowel-initial ('eat' vs. 'it'), /h/-initial ('heat' vs. 'hit') and /p/-initial words ('Pete' vs. 'pit'), which were placed in varying prosodic conditions. Using Electromagnetic Articulograph (EMA), the tongue dorsum positions in the x and y dimensions, the lip opening and the jaw opening (lowering) were measured. With respect to the boundary-induced strengthening, results showed that /i/ and /I/ in vowel-initial words ('eat' - 'it') are produced with a higher tongue position in the domain-intial than domain-medial positions. The fact that the vowels only in the vowel-initial condition showed the domain-intial strengthening (DIS) effect suggests that the DIS effect is localized mainly to the initial position (the locality account). As for the accent-induced strengthening, vowels were produced with a more fronted tongue position and larger lip opening in accented than unaccented positions. This suggests that the presence of accent increases overall sonority of the vowels in various prosodic contexts, and enhances primarily the frontedness of the front high vowels. Taken together, the results indicate that the two types of prosodic strengthening are articulatorily realized differently, supporting the view that they are encoded separately in the speech planning process. The present study also showed the distinction between the two high front vowels in the tongue position (in both the frontedness and the height dimensions), while the jaw did not seem to contribute to the distinction robustly, suggesting that the tongue contributes more in distinguishing the two vowels than the jaw does.

• 대한치과교정학회지
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• 제17권1호
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• pp.119-134
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• 1987

This study was undertaken to find out oropharyngeal movement of the class III malocclusion patients during swallowing by using the cinefluoroscopic method. The experimental group was composed of fifteen male adults with class III malocclusion whose mean age was 24.4 yrs. The control group was composed of fifteen male adults with normal occlusion whose mean age was 24.8 yrs. The results were as follows: 1. The horizontal position of the tongue tip was more anterior in the class III malocclusion group than in the normal group through all stages. 2. The tongue level was lower in the class III malocclusion group than in the normal group during stage 1, stage 3, and stage 4. 3. The horizontal position of the hyoid bone was more anterior in the class III malocclusion group than in the normal group during stage 1 only. 4. The tip of the soft palate was lower in the class III malocclusion group than in the normal group during stage 1 only, and there was no significant difference in the velar movement between the class III malocclusion group and the normal group during swallowing. 5. There was a significant difference in the interincisal distance, but no significant difference in the intermolar distance between the class III malocclusion group and the normal group through all stages. 6. Among 4 stages of each group, there was a significant difference in the movements of the dorsum of the tongue, the hyoid bone, and the soft palates And there was a significant difference in the movement .of the tongue tip of the normal group, but no significant difference in the movement of the tongue tip of the class III malocclusion group.

• 말소리와 음성과학
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• 제3권3호
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• pp.27-33
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• 2011

This paper explores two articulatory characteristics of inter-consonantal coordination observed in lingual-lingual (/kt/, /ks/) and labial-lingual (/pt/) sequences. Using electromagnetic articulometry (EMMA), temporal aspects of the lip movement and lingual movement (of the tongue tip and the tongue dorsum) were examined. Three sequences (/ks/, /kt/, /pt/) were investigated in two respects: gestural overlap in C1C2 and formation duration of coronals in C2 (/t/ or /s/). Results are summarized as follows. First, in a sequence of two stop consonants gestural overlap did not vary with order contrast or a low-level motor constraint on lingual articulators. Gestural overlap between two stop consonants was similar in both /kt/ (lingual-lingual; back-to-front) and /pt/ (labial-lingual; front-to-back). Second, gestural overlap was not simply constrained by place of articulation. Two coronals (/s/ and /t/) shared the same articulator, the tongue tip, but they showed a distinctive gestural overlap pattern with respect to /k/ in C1 (/ks/ (less overlap) < /kt/ (more overlap)). Third, temporal duration of the tongue tip gesture varied as a function of manner of articulation of the target segment in C2 (/ks/ (shorter) < /kt/ (longer)) as well as a function of place of articulation of the segmental context in C1 (/pt/ (shorter) < /kt/ (longer)). There are several implications associated with the results from Korean non-assimilating contexts. First, Korean can be better explained in the way of its language-specific gestural pattern; gestural overlap in Korean is not simply attributed to order contrast (front-to-back vs. back-to-front) or a physiological motor constraint on lingual articulators (lingual-lingual vs. nonlingual-lingual). Taking all factors into consideration, inter-gestural coordination is influenced not only by C1 (place of articulation) but also C2 (manner of articulation). Second, the jaw articulator could have been a factor behind a distinctive gestural overlap pattern in different C1C2 sequences (/ks/ (less overlap) vs. /kt/ and /pt/ (more overlap)). A language-specific gestural pattern occurred with reference to a physiological motor constraint on the jaw articulator.

• 대한치과교정학회지
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• 제20권1호
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• pp.197-207
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• 1990

This comparative study was undertaken to investigate the position of the hyoid bone in unilateral cleft lip and palate individuals. The materials for this study consisted of 35 subjects with surgically repaired unilateral cleft lip and palate (25 males, 10 females) and 40 subjects with normal facial morphology (20 males, 20 females). Cephalometric measurements of unilateral cleft and palate individuals were compared with those of non-cleft individuals. The conclusions of this study were obtained as follows: 1. To the anterior cranial base, the hyoid bone in unilateral cleft lip and palate individuals was located downward as compared with non-cleft individuals. 2. To the mandible, the hyoid bone in unilateral cleft lip and palate individuals was located backward as compared with non-cleft individuals. 3. The distance between the dorsum of the tongue and the inferior border of the hard palate in unilateral cleft lip and palate individuals was longer than that in non-cleft individuals. 4. Unilateral cleft lip and palate individuals showed no significant difference in the distance between the hyoid bone and the dorum of the tongue as compared with non-cleft individuals.

• 대한치과의사협회지
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• 제56권8호
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• pp.437-442
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• 2018

Patients with a wide range of cerebrovascular disease may have difficulty in opening their mouths, resulting in failing to swallow foods and maintain their oral hygiene. K-point was introduced as an effective trigger point to stimulate the jaw opening reflex for those patients. K-point stimulation may be useful as one of methods of helping open the jaw for dental examinations, or for placing foods onto the dorsum of the tongue and swallowing them effectively. Although this method cannot always guarantee the success of the jaw opening for every patient, it may still be considered to be an effective one to apply to patients having difficulty in jaw opening and swallowing disorder.

• Journal of Oral Medicine and Pain
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• 제35권2호
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• pp.101-110
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• 2010

전 세계 인구의 약 절반정도가 H. pylori에 감염되었다고 보고되고 있고, 구강은 H. pylori 감염 및 전염경로에 있어서 두 번째 서식지로 제시되고 있다. 이에 본 연구에서는 H. pylori의 구강내 발현양상이 위의 H. pylori 감염율과 어떤 관련성이 있는가를 조사하여 H. pylori 감염에 있어서 구강의 역할을 밝히고자, 위장질환을 포함한 전신질환이 없는 100명의 하악좌측 중절치 및 제1대구치 치은 열구액, 협점막, 혀의 배면, 구개부위 및 타액에서 표본을 채취하여 Nested PCR을 시행한 후 요소호기검사 결과와 비교하여 다음과 같은 결과를 얻었다. 1. 구강 내에서 샘플을 채취한 6개 부위 중 Nested PCR에서 한 개 이상 양성을 보이는 사람은 36명(36%)이었으며, UBT에서 양성을 나타내는 사람은 33명(33%)이었다(p>0.05). 2. 구강 내 6개 부위에서 샘플을 채취하여 Nested PCR을 시행한 결과, 하악 좌측중절치와 제1대구치 협측 치은열구액에서 각각 11명(11%)과 8명(8%)이 양성을 나타내었고, 오른쪽 협점막, 혀의 배면, 구개부위의 구강점막세포 그리고 혀 밑 타액샘플에서 각각 9명(9%), 3명(3%), 9명(9%), 7명(7%)이 양성을 나타내었다. 구강의 샘플 채취 부위에 따른 발현율의 비교에 있어서 하악 좌측 중절치 협측 치은열구액과 혀의 배면에서 채취한 샘플사이에서만 통계적 유의성이 있었다(p<0.05). 3. 분석방법에 따라 구강과 위장 내 H. pylori 감영양상을 비교한 결과, 구강과 위장에서 양성은 10명(10%), 구강에서 음성과 위장에서 양성은 23명(23%), 구강에서 양성과 위장에서 음성은 26명(26%) 그리고 구강과 위장에서 음성을 나타내는 경우는 41명(41%)이었다(p>0.05). 이상의 결과로 H. pylori는 위의 감염과 무관하게 구강내 정상세균총으로 존재할 수 있음을 추론할 수 있었다.

• Journal of Oral Medicine and Pain
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• 제26권2호
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• pp.161-171
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• 2001

In order to determine how oral mucosal change relates to inducing factors of burning mouth syndrome, the difference in pain perception scale and keratinization rate between burning mouth syndrome patients and normal subjects were investigated. Twenty patients (13 female, 7 male, mean age: 59 years), presenting in the Department of Oral Medicine, Chonnam National University Hospital were participated in this study. All subjects had been complaining of constant oral burning pain for more than a year, none took any strong analgesics, and none had oral mucosal lesions. Twenty volunteers (11 females, 9 males, mean age: 25 years) were also participated in this study as a control group. The control subjects had never had any symptoms of oral burning pain. A thermal stimulation using a Nd-YAG laser and cytological smear were carried out to anterodorsal part of tongue, tip of tongue, the left buccal mucosa, the lower lip mucosa and the chief complaint site. Stimulation of the dorsum of left hand was also carried out to contrast the mucosal area of burning mouth syndrome subjects and the control subjects. The laser output power could be adjusted from 0.75W to 4W. The pain perception scale of the burning mouth syndrome subjects were lower than in control subjects in the chief complaint area, the anterodorsal part of tongue and the buccal mucosa(p<0.01). The keratinization rate of burning mouth syndrome subjects, however, was higher keratinization rate than in normal subjects in the same area and lower lip mucosa(p<0.001). From above results, the anterodorsal part of tongue is the most appropriate site to use diagnostic laser stimulation. The higher level of keratinization and the lower level of thermal pain perception of the burning mouth syndrome subjects are explained as a protective mechanism against xerostomia and burning sensations. The application of Nd-YAG laser stimuli and cytological smear to oral mucosal surface could therefore be usefully employed as appropriate and standardized diagnostic tools for chronic orofacial pain subjects.

• 한국산학기술학회논문지
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• 제17권6호
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• pp.537-545
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• 2016

본 연구는 구강환경요인을 살펴보고, 구강환경이 구강세균 검출에 미치는 위험요인 알아보고자 시행하였다. 연구기간은 2015년 2월 15일~ 2월 28일까지 성인 근로자 60명을 대상으로 조사하였다. 연구변수로는 안정시, 자극시 타액분비율, 타액완충능, 타액 pH, 설배와 설하 구강건조도, 구취 설태량을 측정하였다. 구강세균의 검출 유무를 확인하기 위하여 안정시 타액분비율의 gDNA를 추출하여 균을 검출하였다. 그 결과, S.mutans균은 흡연자 15배, 자극시, 안정시 타액분비율 1.3~1.6배 위험도가 더 높았으며, P.intermedia는 흡연자 13배, 설하 구강건조도 4.3배, 설태량 4배 TM7은 설하 구강건조도 5.5배 더 높은 위험도를 나타냈다. 구강 내 세균을 줄이기 위해서는 타액분비율을 촉진시키는 습관을 형성하고, 금연교육을 시행함이 중요하다고 본다. 또한 구강위생이 깨끗하고 관리가 잘되는 성인에서는 구강세균이 많이 줄어들고, 구강질환을 좀 더 예방할 수 있을 것이라 기대된다.