Epidemiological Analysis About Related Factors Of Cracked Tooth Syndrome In Changchun Area

Cracked teeth syndrome has been defined as teeth with crack linesover a period of time, and company with a series of discomfort withoutany other reasons.Discomfort associated with chewing is the most frequent symptom ofthis syndrome, but unexplained sensitivity to temperature is oftenexperienced by patients. It is hard to diagnose cracked teeth syndrome inclinical trials, not only because of the complicated and diverse symptomsassociated with this condition, but also because of the difficulty inlocating crack lines.As the result, a combination of simple macrography, transillumination,staining with dyes, diagnostic surgery, and microscopy is necessary toidentify and confirm the presence of cracks. Even if a crack is identified,it is difficult to estimate the prognosis because there is no accurate way toknow how advanced the crack has become. Because the crack has anunpredictable prognosis and extraction. The decision to treat and restorecracked teeth involves a discussion with patients about the prognosis, cost,and treatment time. Therefore, it is important to investigate factors relatedto cracked teeth that may provide helpful information about prevention.It is unfortunate that there has been a lack of information about thedistribution and characteristics of cracks according to certain criteria. Inaddition, many authors have proposed different terminologies anddefinitions for cracks in teeth.Because of confusion caused by the use of different terms, it isnecessary to classify and study cracks according to a unified definition. Therefore, in our study, we classified it according to the AmericanAssociation of Endodontists (AAE) guidelines and analyzed thecharacteristics and distribution of various factors.Objective: This study was to analyze the characteristics, distribution,and associated factors of cracked teeth syndrome according to thewelldefined criteria of the American Association of Endodontists (AAE).Methods:162teeth come from Dental hospital Jilin University werediagnosed and analyzed. The patients’ signs, symptoms, age, and sexwere noted as well as the tooth number, filling materials, size orclassification of restoration, pulp vitality, whether the patient hadendodontic treatment, bite test results, percussion test results, andperiodontal pocket depth.Results:80.86%teeth were diagnosed with a cracked tooth,2213.59%were diagnosed with vertical root fracture,3.70%had a splittooth and1.85%had a fractured cusp;82.2%showed a sensitive reactionon the bite test. Cracked tooth were observed most frequently in patient intheir40s. The upper first molar was most frequently cracked, followed bythe lower first molar, the lower second molar, and the upper second molar.Most cracked teeth syndrome (72.22%) occurred mainly in restored teeth,whereas only27.78%were found in intact teeth. Compared withnon-metallic materials, metallic materials increased the occurrence ofcracked teeth syndrome. Out of162of longitudinal fractured teeth,51(31.48%) were treated endodontically and111(68.52%) were not. VRFwas associated with endodontic treatment.81.82%VRF has been treatment as a endodontic treatment.Conclusions: The bite test is most reliable for reproducing symptoms. Molar has the most risk of the crack teeth syndrome. The combined useof various examination methods is recommended for detecting cracks andminutely inspecting all directions of a tooth.