A questionnaire study on doctor-patient relationship was made to the public servants,people at large,medical staff and patients in Beijing in 2007.It found the relationship to be harmonic in general,given tense to some extent,and the main legal causes for tense relationship were incomplete medical legislation,poor awareness of medical subjects in medical service provision and seeking according to law,and incomplete legal systems to handle medical disputes.In this consideration,the paper proposed to enhance healthcare legislation in an effort to:build a better medical and healthcare legal system;upgrade the capabilities of both doctors and patients in medicine practice and service seeking according to law;build a diversified medical dispute resolution mechanism and legal measures of patient rights assurance.

The clinical practice of medical students relates to many complicated interests. There exist insufficiency and irregularity in present law,so perfecting the law in medicine stu-dents’clinical practice is necessary. The lawmaking should insist on the balance in every main body’s right,obligation and responsibility,justice in restriction,acknowledgement and agreement and the principle of multi-factors and level partition.

y of care,in an effort to build a better doctor-patient relationship.

Objective This study aims to investigate the relationship between the dental and basal arch forms of patients with skeletal class Ⅱ malocclusion using three-dimensional virtual models and to generate the best-fit curve for these arch forms. Methods The mandibular dental casts of 35 skeletal class Ⅱ patients were taken prior to treatment and were laser scanned. The facial axis (FA) points, which were used to represent the dental arch, and the WALA points, which were used to represent the basal bone, were identified for each tooth from the right first molar to the left first molar. The Pearson corre-lation coefficients between the intercanine and intermolar widths at the FA and WALA points were determined. Finally, the best-fit curves were generated using the fourth-degree polynomial equation to represent the arch forms. Results A strong correlation was found between the FA and WALA intermolar widths (r=0.873). However, a moderate correlation was observed between the FA and WALA intercanine widths (r=0.534). The difference between the intermolar widths at the FA and WALA points was significant (P<0.01). No statistically significant difference was found between the intercanine widths (P=0.481). The radii of curvature of the FA and WALA curves in the anterior teeth area were 15.194 and 20.250, respectively. The re-gression coefficients of the FA and WALA curves were calculated as R2=0.912 and 0.947, respectively. Conclusion For skeletal class Ⅱ malocclusion patients, the FA and WALA dental intermolar widths showed strong correlation, whereas the FA and WALA intercanine widths exhibited moderate correlation. The FA points were located more labially in the anterior teeth area but more lingually in the posterior teeth area. No statistically significant difference was found between the intercanine FA and WALA widths. The difference between the intermolar widths at the FA and WALA points was significant. The radii of curvature of the FA curve was larger than that of the WALA curve in the anterior teeth area.