唾液具有多种生理功能,是人体不可缺少的体液成份,同时与口腔某些疾病的发生有极为密切的关系,如龋病、牙周病等。牙石是导致牙周炎的主要局部因素之一,清除牙石在牙周病的治疗学方面具有重要意义。唾液的性状及其所含成份与牙石的形成有关,牙石的组成和形成亦受唾液特性的影响,且牙石沉积的程度具有个体差异性,唾液的性状也因人而异, Saliva has a variety of physiological functions, is an indispensable human body fluid composition, and oral certain diseases have a very close relationship, such as dental caries, periodontal disease. Tartar is one of the major local causes of periodontitis, and the removal of tartar is of great importance in the treatment of periodontal disease. Saliva traits and the composition of its associated with the formation of dental calculus, the composition and formation of calculus is also affected by the saliva characteristics, and the degree of individual deposition of tartar differences, saliva traits vary from person to person,