RESUMEN
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.
Asunto(s)
Encía , Maxilar , Adulto , China , Humanos , Incisivo , FenotipoRESUMEN
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.
Asunto(s)
Dentición , Encía , Coronas , Humanos , Maxilar/diagnóstico por imagen , Odontometría , Corona del Diente/diagnóstico por imagenRESUMEN
Pulmonary hypertension (PAH) is a common pathological stats disease in clinic, it has a high morbidity and mortality.It was found that abnormal of endothelial growth factor, coagulation-related factors, 5-hydroxytryptamine, interleukin-6 and other inflammatory factors, hypoxia-inducible factors, transforming growth factor-β1 and connective tissue growth factor(CTGF) and so on were involved in the occurrence and development of PAH, but the specific mechanism was still unclear.In recent years, in monocrotaline(MCT) induced PAH rats model, they found that MCT rats had a significant higher concentration of mitochondrial coupling factor 6 (CF6) in both plasma and lung tissue than control group, which inhibited the activity of prostacyclin (PGI2), suggesting that CF6 may be involved in the occurrence and development of PAH.This paper will discuss the characteristics of CF6, the relationship between PGI2 and CF6, the relationship between PAH and CF6.