Nasal supernumerary teeth and additional dental cyst is a common disease in Department of ENT and Department of Stomatology. In reported diseases, patients with a variety of additional teeth appeared in differ ent parts have varied clinical manifestations. Because of no obvious early symptoms, it is more difficult to diagnose, but CT examination in corresponding site can make it easy to diagnose the maxillary sinus and dentigerous cyst diagnosis. Operation is an effective method to cure the disease. Operation is simple, but the defect and tooth cavity after operation is one unavoidable problem for ENT doctor. In relevant literature it can be seen that the disease has a genetic tendency.
Child ; Dentigerous Cyst ; Humans ; Male ; Nasal Cavity ; Nose Diseases ; Tooth, Supernumerary

OBJECTIVE: To observe waveform differences among ocular vestibular evoked myogenic potentials (ACS-oVEMP) elicited by different types of air conducted sound in normal young Chinese subjects. METHOD: Twenty-two adult volunteers (44 ears) were recruited as research subjects including 12 males and 10 females aged between 18 and 35. Five hundred Hz tone burst, 125 Hz tone burst and click were employed as stimulus for conventional ACS-oVEMP examinations in bilateral ears of each subject. The response rate, threshold, n I latency, p I latency, n I-p I latency interval, amplitude and inter-aural asymmetry were recorded and compared among groups. RESULT: The response rate was 100% (44/44) in 500 Hz tone burst group, 40.9% (18/44) in 125 Hz tone burst group and 29.6% (12/44) in click group There were statistical significant differences between the 500 Hz tone burst group and the other groups (P < 0.05). Waveform amplitude was the largest in the 500 Hz tone burst group (7.3 +/- 5.5) muV than that in the 125 Hz tone burst group (3.8 +/- 1.5) muV and that in the click group (5.8 +/- 1.3) muV, which had statistically significant differences between the former and the later two groups (P < 0.05). Other waveform parameters presented similar differeces. CONCLUSION ACS-oVEMP waveforms could be largely affected by different stimulus. 500 Hz tone burst was the best stimulus with highest response rate, biggest amplitude and therefore most easily recognizable waveform in ACS-oVEMP examination.
Acoustic Stimulation ; Adolescent ; Adult ; Asian Continental Ancestry Group ; Female ; Humans ; Male ; Vestibular Evoked Myogenic Potentials ; Young Adult

OBJECTIVE: To observe waveform difference among cervical vestibular evoked myogenic potentials (cVEMP) elicited with different types of air conducted sound in normal young Chinese subjects. METHOD: Twenty adult volunteers (40 ears) were recruited as research subjects including 10 males and 10 females aged between 19 and 30.500 Hz Tone Burst, 1000 Hz Tone Burst and Click were employed as stimulus for conventional air conducted sound-cVEMP (ACS-cVEMP) examinations in bilateral ears of each subject. The response rate, threshold, P1 latency, N1 latency, P1-N1 latency interval, amplitude and inter-aural asymmetry were recorded and compared among groups. RESULT: The response rate was 97.5% in 500Hz Tone Burst (39/40), 87.5% in 1 000Hz Tone Burst (35/40)and 67.5% in Click (27/40), There were no statistically significant difference between 500Hz Tone Burst and 1000Hz Tone Burst (P > 0.05) but there were statistically significant difference between click and the other groups (P < 0.05). We collected the waveform parameters (the threshold, P1 latency, N1 latency, P1-N1 latency interval, amplitude) which had statistically significant difference between 500 Hz Tone Burst and the other groups (P < 0.05). The inter-aural asymmetrys had no statistically significant differents among groups. CONCLUSION The response rate and parameter could be affected by different types of air conducted sound in normal young Chinese subjects. 500 Hz Tone Burst was the best stimulus of type what we have known.
Adult ; Asian Continental Ancestry Group ; Female ; Humans ; Male ; Neck ; Vestibular Evoked Myogenic Potentials ; Vestibule, Labyrinth ; physiology ; Young Adult

Objective To observe the effect of acoustic stimulus intensity on air-conducted sound elicited ocular vestibular-evoked myogenic potential (oVEMP) and cervical vestibular-evoked myogenic potential (cVEMP) in normal young Chinese subjects. Methods Thirty-five normal subjects aged 4-40 years (20.80 ± 8.89 years), including 16 males and 19 females, were recruited for conventional oVEMP and cVEMP examinations. The responses obtained from each side using 500 Hz tone bursts were divided into 6 groups according to different sound intensities (100, 95, 90, 85, 80 and 75dB nHL). The response rate and normal parameters of each stimulus intensity group were calculated. Results As the acoustic stimulus intensity decreased, the oVEMP response rate decreased from 100%in both 100 dB nHL and 95dB nHL groups to 97.14%(90 dB nHL), 54.29%(85 dB nHL), 14.29%(80 dB nHL), and 2.86%(75 dB nHL), and the response rate of cVEMP, 100%in both 100 dB nHL and 95dB nHL groups, was lowered to 97.14%(90 dB nHL), 84.29%(85 dB nHL), 38.57%(80 dB nHL) and 8.57%(75 dB nHL). The response rate and the parameters were comparable between 100 and 95 dB nHL groups. Conclusion As the acoustic stimulus intensity decreases, both oVEMP and cVEMP show decreased response rate and amplitude. For Chinese subjects under 40 years of age, we recommend 95dB nHL as the maximum initial stimulus intensity in VEMPs test.

Objective To observe the effect of acoustic stimulus intensity on air-conducted sound elicited ocular vestibular-evoked myogenic potential (oVEMP) and cervical vestibular-evoked myogenic potential (cVEMP) in normal young Chinese subjects. Methods Thirty-five normal subjects aged 4-40 years (20.80 ± 8.89 years), including 16 males and 19 females, were recruited for conventional oVEMP and cVEMP examinations. The responses obtained from each side using 500 Hz tone bursts were divided into 6 groups according to different sound intensities (100, 95, 90, 85, 80 and 75dB nHL). The response rate and normal parameters of each stimulus intensity group were calculated. Results As the acoustic stimulus intensity decreased, the oVEMP response rate decreased from 100%in both 100 dB nHL and 95dB nHL groups to 97.14%(90 dB nHL), 54.29%(85 dB nHL), 14.29%(80 dB nHL), and 2.86%(75 dB nHL), and the response rate of cVEMP, 100%in both 100 dB nHL and 95dB nHL groups, was lowered to 97.14%(90 dB nHL), 84.29%(85 dB nHL), 38.57%(80 dB nHL) and 8.57%(75 dB nHL). The response rate and the parameters were comparable between 100 and 95 dB nHL groups. Conclusion As the acoustic stimulus intensity decreases, both oVEMP and cVEMP show decreased response rate and amplitude. For Chinese subjects under 40 years of age, we recommend 95dB nHL as the maximum initial stimulus intensity in VEMPs test.