STA口腔无痛注射仪甲哌卡因局麻联合“T”型分牙术拔除上颌第一磨牙的临床效果

目的:探讨STA口腔无痛注射仪甲哌卡因局麻联合“T”型分牙术在上颌第一磨牙拔除中的应用效果。方法:需要拔除上颌第一磨牙患者72例,分为对照组和观察组各36例。对照组采用传统方法拔牙,观察组采用STA口腔无痛注射仪甲哌卡因局麻联合“T”型分牙术拔牙,比较两组患者手术前后对拔牙的恐惧程度,术中配合程度,手术时间和并发症。结果:对照组术后恐惧程度较术前加重,差异有统计学意义(P=0.035);观察组术后恐惧程度较术前减轻,差异有统计学意义(P=0.034),观察组术后恐惧程度低于对照组,差异有统计学意义(P=0.002)。观察组术中配合程度优于对照组,差异有统计学意义(P=0.048)。观察组手术时间13~19分钟,平均16.22±2.63分钟;对照组手术时间20~25分钟,平均22.67±2.08分钟,观察组手术时间短于对照组,差异有统计学意义(P=0.000)。观察组术中牙龈裂伤、术后出血及邻牙不适发生率低于对照组,差异均有统计学意义(P<0.05)。结论:STA口腔无痛注射仪进行甲哌卡因局部麻醉,采用“T”型分牙术拔除上颌第一磨牙,可降低患者恐惧程度,缩短手术时间,提高患者术中配合度,减少拔牙并发症,是舒适、微创的拔牙术。

分牙术在第一、二磨牙部分保存治疗中的应用

目的 探讨磨牙部分保存治疗的效果和方法 .方法 采用分牙术即牙冠经切割分离后,拔除病变的部分冠根,保存治疗另一部分相对健康的冠根,经过固定修复后恢复患牙咀嚼功能.结果 治疗18例取得满意效果.结论 对因根折或牙龈退缩致根尖暴露的磨牙,采用分牙术保存治疗相对健康的冠根,经过固定修复后恢复患牙咀嚼功能是有积极作用的.

Assessment of Soil Water Content and Remote Sensing Techniques--Case Study of Kiwi Orchard （Portugal）

Soil water management plays an important role in the response of kiwi plants （Actinidia deliciosa A. Chev.）. In GuimarSes district soil moisture content is monitored in kiwifi＇uit orchard as a routine parameter. Drip irrigation system is the method used. This crop tends to have high water requirements and extends over a wide area in Portugal, requiring innovative solutions to achieve better benefits. A method that correlates soil and crop conditions with the parameters of remote sensing was established in this study. To assess the level of accuracy of soil moisture measurements from satellites, it is important to compare satellite image with ground real data （namely the frequency domain reflectometry （FDR）, Diviner 2000）. The combination of multispectral satellite images produces an image representative of vegetation vigour, density and health. In this study, Landsat satellite images （2011 and 2013） are used and vegetation indexes are calculated for different periods of time, using the software Idrisi Taiga. The information of vegetation indexes is crossed with data of soil moisture, in situ, to establish a correlation between both of them. Thus, it allows to improve the soil water content monitoring, in particular for the soil water balance optimization and its effect on kiwi biornass production.

Analysing Different Microgeneration Systems for Portuguese Residential Sector

The main purpose of this article is to perform a technical-economic analysis of different microgeneration systems （photovoltaic and wind turbine systems） that can be installed in a single-family house. One of the strategies for improving energy performance of buildings is the installation of microgeneration systems. This will enable Portugal to meet the goal regarding the share of renewable sources on gross final energy consumption imposed by the European Commission climate change and energy package for 2020. The analysis of four different micro-generation systems will take into account the local availability of renewable resources and market technologies and the new Portuguese law concerning microgeneration to promote renewable energy sources in households. The Portuguese microgeneration legal framework is also highlighted.

第二前磨牙与多生牙融合畸形修复1例报告

融合牙是由两个牙胚间的釉质或牙本质融合而形成的牙发育畸形。Knezevi等曾对3500名受访者的融合牙流行情况进行分析发现,融合牙仅占调查人群的0.5%以下。乳牙融合较为多见,表现为共用同一髓腔根管系统或各自有单独的髓腔根管系统,这取决于融合发生的时间。如果融合发生在牙冠形成之前,则牙冠硬组织部分会融合在一起;如果融合发生在牙冠形成之后,则表现为根部融合。