Dental wastes need comprehensive identification, planning and management due to the presence of hazardous chemicals. The aim of the present study was to investigate the quantity, quality and management of wastes in general and specialized dental offices in Babol, Mazandaran Province. This research was conducted in 40 general dentistry offices with 52 dental units and 240 patients per day and in 13 specialized dentistry offices with 21 units and 78 patients per day through random sampling. Samples were analyzed at the end of the work hour after transferring to a suitable place. The total amount of wastes generated was 333.8 and 340.9 g/unit/day as well as was 72.3 and 91.7 g/patient/day in general and specialized dentistry offices, respectively. In general and specialized dentistry offices, the amount of infectious wastes was 95 and 83.2 g/unit/day as well as 20.6 and 22.4 g/patient/day; Domestic-type wastes was 113.4 and 124.7 g/unit/day as well as 24.6 and 33.5 g/patient/day; chemical toxic waste was 47.3 and 47.04 g/unit/day as well as 10.2 and 12.6 g/patient/day; sharps was 66.1 and 69.6 g/unit/day as well as 14.3 and 18.7 g/patient/day; and amalgams was 11.9 and 16.4 g/unit/day as well as 2.6 and 4.43 g/patient/day. The recycling of silver and mercury was carried out in 7.5% of specialized dentistry offices. Training the dentists is required to perform the activities related to the reduction, separation and recycling of wastes as well as to implement the plan of collection, transportation and disposal of infectious, sharp, chemical-toxic and amalgam wastes according to the relevant criteria.

由于存在有害化学物质，牙科废物需要全面的识别，计划和管理。本研究的目的是调查Mazandaran省Babol普通牙科诊所和专业牙科诊所的废物数量，质量和管理。这项研究是在40个普通牙科诊所（每天有52个牙科单位和240位患者）和13个专门牙科诊所（每天有21个单位和78位患者）中进行的随机抽样进行的。在转移到合适的地方后的工作时间结束时对样品进行分析。产生的废物总量分别为333.8和340.9克/单位/天，普通和专科牙科诊所分别为72.3和91.7克/病人/天。在普通和专门牙科诊所，传染性废物的数量分别为95和83。2克/单位/天，以及20.6和22.4克/患者/天；生活类废物为113.4和124.7克/单位/天，以及24.6和33.5克/患者/天；化学有毒废物为47.3和47.04 g /单位/天，以及10.2和12.6 g /患者/天；锐器为66.1和69.6 g /单位/天，以及14.3和18.7 g /患者/天；汞齐分别为11.9和16.4 g /单位/天，以及2.6和4.43 g /患者/天。银和汞的回收在7.5％的专业牙科诊所进行。需要对牙医进行培训，以根据相关标准进行与废物的减少，分类和回收有关的活动，并执行传染性，尖锐，化学毒性和汞齐废物的收集，运输和处置计划。7克/单位/天，以及24.6和33.5克/患者/天；化学有毒废物为47.3和47.04 g /单位/天，以及10.2和12.6 g /患者/天；锐器为66.1和69.6 g /单位/天，以及14.3和18.7 g /患者/天；汞齐分别为11.9和16.4 g /单位/天，以及2.6和4.43 g /患者/天。银和汞的回收在7.5％的专业牙科诊所进行。需要对牙医进行培训，以根据相关标准进行与废物的减少，分类和回收有关的活动，并执行传染性，尖锐，化学毒性和汞齐废物的收集，运输和处置计划。7克/单位/天，以及24.6和33.5克/患者/天；化学有毒废物为47.3和47.04 g /单位/天，以及10.2和12.6 g /患者/天；锐器为66.1和69.6 g /单位/天，以及14.3和18.7 g /患者/天；汞齐分别为11.9和16.4 g /单位/天，以及2.6和4.43 g /患者/天。银和汞的回收在7.5％的专业牙科诊所进行。需要对牙医进行培训，以根据相关标准进行与废物的减少，分类和回收有关的活动，并执行传染性，尖锐，化学毒性和汞齐废物的收集，运输和处置计划。6克/单位/天，以及14.3和18.7克/患者/天；汞齐分别为11.9和16.4 g /单位/天，以及2.6和4.43 g /患者/天。银和汞的回收在7.5％的专业牙科诊所进行。需要对牙医进行培训，以根据相关标准进行与废物的减少，分类和回收有关的活动，并执行传染性，尖锐，化学毒性和汞齐废物的收集，运输和处置计划。6克/单位/天，以及14.3和18.7克/患者/天；汞齐分别为11.9和16.4 g /单位/天，以及2.6和4.43 g /患者/天。银和汞的回收在7.5％的专业牙科诊所进行。需要对牙医进行培训，以根据相关标准进行与废物的减少，分类和回收有关的活动，并执行传染性，尖锐，化学毒性和汞齐废物的收集，运输和处置计划。