The Clinical Analysis Of Bad Retention And Stability On Complete Dentures

Recently, along with our country come in the old age society gradually,the edentulous jaws patients are increasing year by year . Because it influentes the masticate function seriously,affects the face shape and brings tremendous of sufferings, the patients request to be repaired urgently. In the clinical,we often use complete dentures to repair the edentulous jaws.A better retension and stability is the key of getting a better repairing result of complete dentures, and also is the direction of people studying in recent years. In order to improve the retension and stability of complete dentures, it need the patients adapting and practicing apart from, mostly it need the doctor's careful check.Doctors should find out the factor of affecting the retension and the stability as far as possible.In this paper, we analyze the phenomenon that the complete dentures' retension and stability are bad, in order to study a method to improve the retension and stability of complete denture. In 2002.3～2004.3,we observed 53 patients who repaired the complete dentures in our hospital, and the dentures' retension and stability are bad,include 23 new dentures and 21 old dentures.We analyz the phenomenon that the complete dentures' retension and stability are bad,and look for the improved methods.The result show, the reasons for complte dentures' retension and stability are bad include that the patients themselves factor 8 cases, occupy 25.0%,the occlude relations are unbalance 18 cases, occupy 56.3%,the manufacture error 6 cases,occupy 18.7%.In the old complete dentures,it mainly is the alveolar ridge are absorbing,there is a space in the alveolar ridge and the base plate.Through the repair,the new dentures' clinical result have improved, the old dentures' clinical result haven't a obviously improvement,it must make a new one or have a surgical operation.From the paper,we can get a conclusion, the bad retension and stability of complete dentures is a familiar phenomenon in the clinic,it is influence by various factors.The patients' mental state factor and bad habit influence the retension and stability of complete dentures greatly.Before the repairing proceed,the doctors must communicate with patients, correct the patients'bad occlude habit,help patients adapt to the dentures as soon as. Some patients'oral anatomy is not good, and bring difficult to repair.Before the repair,doctors shoule examine the patients'oral circumstance detailly,do away with the apophysis ,torus and hyperplasia gingival, make the good preparation work.In the complete dentures,taking impression has a higher request,it must be the condition of oral function to ensure the denture still keep the good stability when make a function.If the alveolar ridge is low and even,we can take impression two times to get a accurate impression.When complete denture make occlude,it must contect several spots,accord with the balance occlusion.The premature contact spots are grinded to establish the bigger occlusal latitude.The occlusal adjustment should be careful,accord to the request and prevent the new imbalance occlusion.Because of the alveolar ridge are absorbing and the occlisal surface' attrition,there is a space in the alveolar ridge and the old complete dentures' base plate,the vertical dimension become shorter.We use the soft liner to reline the base plate to make it contact with alveolar ridge,and recovery the vertical dimension.The retension and stability have some improvement,but the effect is not notable.Because of the clinical cases that we observe are limited,some viewpoints may be localization, some aspect may have the lapse, still need long-term and large quantity of clinical observational. ...