Lateral Window Maxillary Sinus Floor Elevation With Removing Maxillary Sinus Pseudo Cyst Simultaneously

Objective:A case report——lateral window maxillary sinus floor elevation with removing maxillary sinus pseudo cyst simultaneously, observing its clinical effect to provide reference and help for clinical practice. Methods:lateral window maxillary sinus floor elevation with sucting out the fluid in the cyst and removing maxillary sinus pseudo cyst simultaneously and 1 implant was placed. Before the surgery, CBCT showed that the remaining bone height was about 4.2mm and bone mineral density was Low, there was a domed cystic lesion on the maxillary sinus floor, uniform density, smooth and continuous edge, whose size was about 26.2mm×34.4mm, without destruction and distention of the sinus bony wall. CBCT examination was done respectively immediately afte^ half a year and 1-year after surgery. The cyst condition, the gain of vertical bone height and implant stability over time were observed. Results:During the period of fellows——29months, implant had gained ossteointegration, the bone around the implant is stable. During the follow-up without implants failure and occlusal relationship is good, the cyst has no recurrence. Conclusion:Currently the clinical effect implies that Lateral window maxillary sinus floor elevation with removing maxillary sinus pseudo cyst simultaneously can obtain a satisfactory clinical result.Maxillary sinus floor lifting surgery has created the good conditions for implant placement and restoration in the maxillary molar region, and the clinical effects has confirmed its reliability and predictability, currently it has been widely accepted as a conventional bone augmentation surgery for lacking of bone mass in the maxillary molar region internationally, which is mainly divided into two kinds of operative methods: transcrestal maxillary sinus floor lifting technique and lateral window maxillary sinus floor lifting technique. Maxillary sinus cyst is one of the common benign maxillary sinus diseases, and its existence has always been considered to be the contraindication of the maxillary sinus floor lifting, and restricted the possibility of maxillary bone augmentation, which has increased the incidence of surgical complications. Classification and naming of maxillary sinus cyst has no unified opinion, some researchs have divided it into the maxillary sinus mucocele, maxillary sinus retention cyst and maxillary sinus pseudo cyst. The clinical features and biological behaviors of different cysts are different, which also determine the different clinical measures will be taken in order to improve the surgical success rate and reduce the incidence of complications. However, for different cysts, how to choose the ways of surgery has no clear conclusion, there are mainly three surgical methods:firstly, removing the maxillary sinus cysts, and delaying the maxillary sinus floor lifting and bone graft surgery; Secondly, removing the maxillary sinus cysts, at the same time lifting the maxillary sinus floor and operating the bone graft surgery; Thirdly, retaining the maxillary sinus cysts, directly lifting the maxillary sinus floor and operating the bone graft surgery. Therefore, so as to provide reference and help for clinical practice, the classification and diagnosis of maxillary sinus cysts, different measurements of different maxillary sinus cysts when lifting the maxillary sinus floor and prevention and treatment methods of main complications will be summarized in this paper. With the improvement of people’s living standard, dental implant restoration is increasingly favored by patients with missing teeth; however, the number of complications related to implant is increasing. Peri-implantitis is one of the common complications of dental implants surgery, which can result in loss of the support bone, osseo-integration failure, and even lead to osseo-integration implant loss. The clinical manifestations of peri-implantitis are various, which are sometimes difficult to diagnose; early correct diagnosis of peri-implantitis will contribute to the further treatment. This paper will make a review of the diagnostic methods of peri-implantitis.