Objective To investigate the usage of laser in face remodeling through melting fat in maxillo-facial region.Methods Laser fiber was inserted into facial fat layer through the incision located at naso-labial region.Semiconductor laser was used (Velure S9,wavelength 980 nm,and output energy 9 J).Laser fiber was moved in fan direction.Face was dressed in suitable pressure after operation for one month.The appearance was compared before and after operation.Results Subcutaneous fat decreased dramatically in facial fat-rich regions.Facial contour became better after operation than that before operation.The appearance of mandible angle/mandible margin and buccal region changed obviously.Conclusions Intra-tissue laser lipolysis is one of minimally invasive surgery,and it is useful in face remodeling for fat accumulation.It is safe and brief,and can be performed easily and repeatedly.

Objective:To discuss the effect of trigeminus nerves on the phenotype of MHC after facial paralysis; Methods:The morphologic changes were observed by histochemical methods 、the phenotype of MHC by SDS PAGE 、the tension of contraction and the threshold value of electrical stimulation by electrical physiological methods; Results: trigeminus nerves could delay the decomposing of MHC, maintain the tension of contraction and the threshold value of electrical stimulation; Conclusion: Sensory nerves could delay the muscular atrophy ,and should be repaired when we repair motor nerves.

Vascular birthmarks are the most common disease.The morbidity is about 2.5%,most of the lesions occur in oral and maxillofacial regions which accounts for 40%-60% of the total lesions.In 1982,Mulliken and Glowacki proposed a biologic classification of vascular birthmarks on the basis of their clinical manifestations,histopathological features,and natural history.They defined hemangiomas as vascular tumors with a growth phase,marked by endothelial proliferation and hypercellularity,and an involutional phase.They recognized that many entities referred to as hemangiomas are actually structural malformations of the vasculature,derived from capillaries,veins,lymph vessels,or arteries or from a combination of these sources.The classification was confirmed and issued by International Society for the study of vascular anomality(ISSVA) in 1988.Waner and Suen amended the above category in 1995.This paper presents the new classification of vascular birthmarks and the developments in this field in re-cent years,including the pathology,clinical features and the therapy.For example,the classification of venular malformation categorized by Waner in 1989;the classification of lymphous malformation by Waner and Suen in 1995;and the treatments according to above classifications.