Relationship of Gingival Phenotypes and Faciolingual Thickness, Papilla Height, and Gingival Angle in a Chinese Population.

The objective of this study was to determine the normal values of faciolingual thickness (FLT) of the papilla base, papilla height (PH), and gingival angle (GA) among Chinese adults and the association of FLT with the gingival phenotype. The periodontal phenotypes of 105 volunteers were confirmed by Kan et al's periodontal probe transmission method and classification. All volunteers received complete supragingival scaling and were recalled after 1 week for clinical examination and for recording various periodontal indices, including Plaque Index, Gingival Index, and periodontal depth. The FLT, PH, and GA of maxillary anterior teeth were measured, and their associations were analyzed. The mean FLT of papilla between the right canine (CA) and lateral incisor (LI) was 8.11 ± 0.64 mm; between the right LI and central incisor (CI) was 7.77 ± 0.64 mm; between the right CI and left CI was 8.49 ± 0.66 mm; between the left CI and LI was 7.62 ± 0.63 mm; and between the left LI and CA was 8.17 ± 0.63 mm. The thin-phenotype group showed a greater PH and FLT than the thick phenotype group. Inversely, the GA of the thick-phenotype group was greater than the corresponding values for the thin-phenotype group. In Chinese residents, the high and thick papilla are associated with the thin phenotype, while the low and thin papilla are associated with the thick phenotype. The GA is negatively correlated with PH. A weak correlation exists between the GA and FLT of papilla.

Analysis of Crown Morphology and Gingival Shape in the Maxillary Anterior Dentition.

From a sample of 108 periodontally healthy volunteers with different combinations of morphometric data related to maxillary central anterior teeth and the surrounding soft tissues, this article aims to categorize gingival phenotypes according to tooth and gingival parameters, as well as assess the relationships between tooth shape and gingival characteristics, such as the papillary height (PH) and faciolingual thickness (FLT) of the papilla base. The periodontal phenotypes of 108 volunteers were confirmed using the periodontal probe transmission method for Kan classification. The FLT, PH, and the crown width to crown length (CW/CL) ratio for maxillary anterior teeth were measured. K-clustering was used to classify the anterior tooth shape into three groups: triangular, square, and compound. The mean CW/CL ratio for the maxillary anterior tooth position of the thick phenotype was greater than that of the thin phenotype. The PH and FLT for the maxillary anterior interdental papillae were greater for the thin phenotype group than for the thick phenotype group. A negative correlation was observed between the CW/CL ratio and both PH and FLT (P < .05 for both). However, a significant positive correlation was observed between FLT and PH. CW/CL ratio, FLT, and PH were all associated with the gingival phenotype with significant statistical correlations (P < .05 for all). Triangular teeth were correlated with scallop-shaped gingiva in the faciolingual area, while square teeth were associated with a flat gingiva.

The analysis of correlation between tongue body MRI and upper airway pressure measurements of blocked lingual region in patients with moderate and severe OSAHS / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To investigate the correlation between tongue body MRI measurements and the lingual region obstruction in patients with obstructive sleep apnea hypopnea syndrome (obstructive sleep apnea hypopnea syndrome, OSAHS), and the relationship of two diagnosis methods in positioning obstructive level, in order to improve the preoperative diagnostic accuracy of obstructive level in OSAHS patients .@*METHOD@#Fifty-nine patients with OSAHS definited by the AG200 sleep apnea monitoring and obstruction plane positioning system was included. They all underwent tongue MRI scan, after three-dimensional reconstruction, the tongue body length to diameter, relative thickness, basal diameter, wide around central about wide diameter and tongue body volume were measured. The lower blocking (mainly composed of lingual region) constituent ratio P established by AG200 was correlated with tongue parameters measured by MRI. At the same time, To analysis of differences of P in patients with different degree of OSAHS.@*RESULT@#Among these patients with OSAHS in different degree, the coefficient correlation between tongue parameters(tongue length, relative thickness, basal diameter, wide middle diameter, tongue body volume) and lower blocking constitute ratio P werer LP = 0.051,rHP = 0.069, r1 = 0.215, r2 = 0.147, rVP = 0.259, respectively. lower obstruction of form than the differences had statistical significance. The measured tongue parameters and value P(the lower blocking constituent ratio) were negatively correlated, which demonstrated that exclusing of the larynx and hypopharynx airway obstruction, the lower airway obstruction detected by AG200 was related with tongue parameters measured by MRI, and was strongestly related with the tongue body volume.@*CONCLUSION@#The volume of tongue and AG had correlation in judgement of lower blocking. In OSAHS patients the lower blocking constituent ratio varies between the defferent severity groups of the disease, the combina tion of the two method can be used to predict the obstructive plane in OSAHS patients with upper airway obstruction, and provide the basis for the individual treatment of patients with OSAHS.

Tube placement and drug irrigation in the auditory tube under nasoscope for the treatment of secretory otitis media / 中国微创外科杂志

Objective To investigate the curative effect of tube placement and drug irrigation in the auditory tube under nasoscope in the treatment of secretory otitis media(SOM). Methods Under the visualization of a 30? nasoscope,an epidural guiding tube was placed through the pharyngeal opening of the auditory tube into the tympanic cavity for drug irrigation in 50 cases of secretory otitis media(50 ears).Results Follow-up observations for 6~24 months showed 26 cases of cure(52%),19 cases of improvement(38%),and 5 cases of no effect(10%),the total effective rate being 90%. Conclusions This procedure has advantages of simplicity of performance,unaffected drum membrane,high safety,no pain,and satisfactory outcomes,being an effective treatment option for improving the function of the auditory tube and hearing ability in patients with secretory otitis media.

A clinical observation of nasal endoscopic septoplasty / 中国微创外科杂志

Objective To investigate advantages of sep to plasty under nasal endoscope. Methods Septoplasty was carried out under nasal endoscope in 50 cases, including 6 cases of upper or posterior n asal septum deviation. Results The operation was completed on one session in all the 50 cases, with the deviated nasal septum being entirely c orrected. The operation time was 30~72 min (mean, 48 min). Follow-up surveys for 6~9 months (mean, 7.1 months) indicated a complete cure in 45 cases (90%) and a n improvement in 5 cases (10%). No septal hematoma, abscess, perforation, nasal cavity adhesion, or bridge collapse were encountered. Conclusions Nasal endoscopic septoplasty has advantages of short operation time, few bl ood loss, mild pain, little complications, and the possibility of nasal sinus co -operation. This technique may fully replace the traditional submucous resection .

Treatment of mycosis of maxillary sinus by nasal endoscopic surgery / 中国微创外科杂志

Objective To explore the curative effect of endoscopic simple maxillary ostium enlargement in the treatment of non-invasive mycosis of maxillary sinus. Methods Clinical data of 16 cases of noninvasive mycosis of maxillary sinus were analyzed retrospectively. Results The operation time was 30～120 minutes, with a mean of 60 minutes. No operative complications occurred. The hospital stay was 5～7 days, with a mean of 6 days. Histopathological examination found hyphae and spores in 16 cases, and a positive culture of Aspergillus was observed in 9 cases. Postoperative follow-up for 3～24 months (mean, 18 months) in 16 cases revealed free of symptoms in 14 cases, in which the endoscopic examination showed unobstructed ostium and normal sinusal mucosa, and recurrence in 2 cases, who underwent repeated enlargement of ostium and were re-followed for 6 and 13 months, respectively, without recurrence. Conclusions Nasal endoscopic simple maxillary ostium enlargement in the treatment of non-invasive mycosis of maxillary sinus is a radical and minimally invasive technique, but particular attention must be directed to managing the maxillary ostium.