目的比较三角瓣设计和封套瓣设计在缓解下颌第三磨牙拔除术后并发症方面的效果,为口腔颌面外科医生提供翻瓣选择的科学依据。方法通过检索CNKI、万方、PubMed、Embase、Web of Science、Cochrane和Springer数据库,筛选1984年1月至2022年...目的比较三角瓣设计和封套瓣设计在缓解下颌第三磨牙拔除术后并发症方面的效果,为口腔颌面外科医生提供翻瓣选择的科学依据。方法通过检索CNKI、万方、PubMed、Embase、Web of Science、Cochrane和Springer数据库,筛选1984年1月至2022年4月发表的随机对照试验和对照临床试验,分析三角瓣和封套瓣对下颌第三磨牙拔除术后面部肿胀、张口受限和干槽症等并发症的影响。结果Meta分析显示,三角瓣组术后第7天的面部肿胀程度显著大于封套瓣组(MD=-0.69,95%CI:-0.93~-0.45;P<0.00001),但2组术后第14天的面部肿胀程度比较差异无统计学意义(MD=-0.07,95%CI:-0.18~0.04;P=0.22)。亚组分析表明,在Pell and Gregory A/B分类中,封套瓣在改善张口受限方面效果优于三角瓣(MD=2.95,95%CI:0.11~5.79),但在其他分类亚组及总体分析中未观察到显著差异。在分侧随机对照试验中封套瓣干槽症发生的风险更高(RR=3.53,95%CI:1.67~7.48),而在随机对照试验中未见明显差异(RR=0.78,95%CI:0.43~1.43)。结论与三角瓣相比,封套瓣在缓解术后早期面部肿胀改善张口受限方面具有优势,但其干槽症发生风险较高。展开更多
Constructing Bernstein-Bezier triangular interpolating curve surface interpolating a series of arbitrary disordered data points is of considerable importance for the design and modeling of surfaces with a variety of c...Constructing Bernstein-Bezier triangular interpolating curve surface interpolating a series of arbitrary disordered data points is of considerable importance for the design and modeling of surfaces with a variety of continuity information. In this article. a kind of simple and reliable algorithm that can process complex field triangular grid generating is presented, and a group of formulae for determining triangular curved surface with wholly C1 continuity are given. It can process arbitrary non-convex boundary and can be used to construct surfaces inner holes.展开更多
文摘目的比较三角瓣设计和封套瓣设计在缓解下颌第三磨牙拔除术后并发症方面的效果,为口腔颌面外科医生提供翻瓣选择的科学依据。方法通过检索CNKI、万方、PubMed、Embase、Web of Science、Cochrane和Springer数据库,筛选1984年1月至2022年4月发表的随机对照试验和对照临床试验,分析三角瓣和封套瓣对下颌第三磨牙拔除术后面部肿胀、张口受限和干槽症等并发症的影响。结果Meta分析显示,三角瓣组术后第7天的面部肿胀程度显著大于封套瓣组(MD=-0.69,95%CI:-0.93~-0.45;P<0.00001),但2组术后第14天的面部肿胀程度比较差异无统计学意义(MD=-0.07,95%CI:-0.18~0.04;P=0.22)。亚组分析表明,在Pell and Gregory A/B分类中,封套瓣在改善张口受限方面效果优于三角瓣(MD=2.95,95%CI:0.11~5.79),但在其他分类亚组及总体分析中未观察到显著差异。在分侧随机对照试验中封套瓣干槽症发生的风险更高(RR=3.53,95%CI:1.67~7.48),而在随机对照试验中未见明显差异(RR=0.78,95%CI:0.43~1.43)。结论与三角瓣相比,封套瓣在缓解术后早期面部肿胀改善张口受限方面具有优势,但其干槽症发生风险较高。
文摘Constructing Bernstein-Bezier triangular interpolating curve surface interpolating a series of arbitrary disordered data points is of considerable importance for the design and modeling of surfaces with a variety of continuity information. In this article. a kind of simple and reliable algorithm that can process complex field triangular grid generating is presented, and a group of formulae for determining triangular curved surface with wholly C1 continuity are given. It can process arbitrary non-convex boundary and can be used to construct surfaces inner holes.
