OBJECTIVE: To analyze the clinical characteristics and risk factors of patients with oral bleeding. METHODS: A retrospective study was performed on patients with oral bleeding in the Department of Oral Emergency in Peking University School and Hospital of Stomatology from January 2019 to December 2022. The distribution of the patients ' gender, age, cause of bleeding, systemic condition, treatment methods and risk factors of hemostasis methods, and number of visits were analyzed. RESULTS: A total of 4 764 patients with oral bleeding were enrolled, including 2 660 males (55.84%) and 2 104 females (44.16%), with an average age of 40.7 years. The most common causes of oral bleeding were bleeding after tooth extraction (3 080 cases, 64.65%), followed by gingival bleeding (1 386 cases, 29.09%), bleeding after outpatient surgery (194 cases, 4.07%), maxillofacial mass bleeding (33 cases, 0.69%), postoperative bleeding of inpatient (24 cases, 0.50%), and bleeding from other causes (47 cases, 0.99%). Simple hemostatic methods were applied in 1 867 cases (39.19%) while 2 897 cases (60.81%) used complex methods, among which iodine strip tamponade and suture were the most commonly used methods of hemostasis. Logistic regression analysis showed that the male patients had a higher proportion of complex methods than the female patients; gingival bleeding were often stopped by simple hemostatic methods while complex methods were more likely to be applied in the patients with bleeding after tooth extraction. The patients with hypertension and coagulation disorders were more likely to visit the hospital for repeated bleeding. Gender and age did not affect the number of visits. CONCLUSION Oral bleeding was one of the common diseases in oral emergency. The common causes were bleeding after tooth extraction and gingival bleeding. Most patients could be treated by compression, local suture and packing of iodine strips while some cases with severe bleeding needed further treatment to stop bleeding. A minority of patients with oral bleeding could induce systemic complications, which should be paid full attention by clinicians.
Humans ; Male ; Female ; Retrospective Studies ; Adult ; Risk Factors ; Middle Aged ; Tooth Extraction/adverse effects* ; Oral Hemorrhage/epidemiology* ; Young Adult ; Adolescent ; Aged ; Child ; Hemostatic Techniques ; Emergencies ; Postoperative Hemorrhage ; Aged, 80 and over ; Child, Preschool ; Gingival Hemorrhage/etiology*

OBJECTIVETo observe the effect of modified surgical crown lengthening procedure and discuss the factors which could affect the periodontal health of the operated teeth.

METHODSSeventeen patients, a total of 20 teeth, who received the modified crown lengthening surgery were recruited in a retrospective study (1 - 6 years). The periodontal status of the operated teeth was compared with the adjacent and the contralateral natural teeth respectively.

RESULTSOne out of seventeen patients appeared root fracture after surgery, one patient wasn't satisfied with the color of the molar's metal crown, other fifteen patients were satisfied with the esthetics and function of the teeth. The sites where probing depth was 4 mm just accounted for 4% (5/120) of the operated teeth, and the probing depth of the other sites was less than or equal to 3 mm. Although 83% (33/40) of buccal and lingual sites of the teeth exhibited various degrees of bleeding index, the periodontal indices of the operated teeth and the adjacent teeth. The position of the crown margin had a significantly negative correlation with the bleeding index (r = -0.742), and the plaque index was moderately correlated with the bleeding index (r = 0.480).

CONCLUSIONSThe modified surgical crown lengthening indicated a good effect, which could be an alternative method to save the residual crown and root. The position of crown margin might be the main factor which influences the periodontal health of the teeth.

Adult ; Crown Lengthening ; adverse effects ; methods ; Dental Plaque Index ; Esthetics, Dental ; Female ; Gingival Hemorrhage ; etiology ; Humans ; Male ; Middle Aged ; Periodontal Index ; Retrospective Studies ; Surveys and Questionnaires ; Time ; Tooth Crown ; surgery ; Tooth Fractures ; etiology

OBJECTIVETo investigate the situation of gingival bleeding in patients with untreated gingivitis.

METHODSTotally 444 patients with untreated gingivitis were enrolled in one district located in Beijing. The gingival bleeding, except the third molars, was evaluated using the gingival bleeding index (GBI).

RESULTSThe sites of GBI=1 were 8.15+/-7.17 in males and 5.65+/-5.65 in females (P=0.0003). The sites of GBI=2 were 33.48+/-21.65 among subjects aged 35-50 years and 24.31+/-18.15 among subjects aged 18-29 years (P=0.03). The first left mandible molars had the highest GBI, while the right maxillary incisors got the lowest GBI. The posterior teeth, the lingual surface, and the proximal region had more sites than the anterior teeth, the buccal surface, and the central region on GBI=1, GBI=2 and total sites P<0.05.

CONCLUSIONThe severity of gingival bleeding is associated with age and gender, and tends to be site-specific.

Adolescent ; Adult ; Age Factors ; Female ; Gingival Hemorrhage ; etiology ; Gingivitis ; complications ; Humans ; Male ; Middle Aged ; Periodontal Index ; Sex Factors ; Young Adult

OBJECTIVEToday metal-ceramic restorations are widely accepted in dental practice because of their good aesthetic and biocompatible properties, but there are still several problems to be resolved, among which the influences of their margins on gingival health is noticeable. The purpose of this study was to investigate the influences of metal-ceramic restoration margin on gingival health.

METHODS129 abutments of metal-ceramic restorations, including their margins' fitness, location and smoothness were examined and their influences on gingival health were analyzed.

RESULTSThere was a close relation between the metal-ceramic restorations' margins and the gingival health.

CONCLUSIONIn order to maintain the gingival health, the margins should be smooth, closely fitted, no overhanging and in a moderate location (i.e. not below the gingival more than 1 mm).

Female ; Gingival Diseases ; etiology ; Gingivitis ; etiology ; Hemorrhage ; etiology ; Humans ; Male ; Metal Ceramic Alloys ; adverse effects