守护健康牙，治疗病患牙，保留天然牙

口腔健康是衡量一个国家口腔疾病防治水平和社会经济发展的重要指标。广东省口腔医学会提出"守护健康牙，治疗病患牙，保留天然牙"的指导思想，旨在防止经济发展和资本渗透使临床诊治出现商业化趋势，导致保留天然牙的诊疗主旨受到冲击，加强和凸显口腔医学各学科优势，引导口腔临床健康发展。     

Impacted teeth

Prevention of impaction depends in many cases on the knowledge of variations in eruption sequences. However, in case of impaction, spontaneous eruption can be stimulated by exposing the tooth with the modified window-technique. Frequent communications between dentist, orthodontist and oral surgeon are required to determine the right time of intervention.     

喷粉洁牙与砂碟抛光技术在外源性染色牙面上的应用

目的　吸烟、喝茶、咖啡等常造成牙齿的外源性染色 ,作者尝试用喷粉洁牙和牙面系列抛光技术治疗此类牙变色。方法　共治疗 10 5 6例患者 ,喷粉操作由Microprep完成 ,牙面抛光用Super—snap砂碟完成。结果　治疗后无疼痛及牙齿敏感发生 ,牙面抛光后达到镜面样外观。结论　超声波洁治去除色斑有明显的不当之处 ,喷粉加抛光可以快速、有效、无痛达到美牙目的。     

Submerged teeth

Submersion occurs when a previously erupted tooth becomes embedded in the oral tissues. The purpose of this paper is to examine the distribution, the degree of re-impaction, the rate of congenital absence of the successor buds and the treatment in 28 submerged teeth in 17 patients.     

Double teeth

Double teeth are not really rare, but it is still enigmatic why and how they develop. Based upon the clinical, morphological and anatomical appearance and the number of teeth in mouths with double teeth, the double teeth are labelled as products of 'fusion' and 'clefting', but the criteria to attach such etiological names are lacking. It is assumed that heredity is involved in the development of double teeth. Therefore it is attempted to explain why only one of a homozygotic twin had a double tooth.