Nevalainen M J, Närhi T O, Siukosaari P, Schmidt-Kaunisaho K, Ainamo A
Department of Prosthetic Dentistry, University of Helsinki, Finland.
J Oral Rehabil. 1996 Nov;23(11):722-8. doi: 10.1046/j.1365-2842.1996.00420.x.
The aim of this study was to document the number of remaining natural teeth, to examine the prosthetic rehabilitation and to evaluate further prosthetic treatment needs among a representative sample of 76-86-year-old inhabitants of Helsinki. The edentulous made up 46% (168) of the subjects, 40% of the men and 48% of the women. Of these edentulous, 94% (158) wore complete dentures in both jaws, 2% wore only a maxillary denture, and 4% wore no dentures at all. One edentulous subject had an implant-supported overdenture in the lower jaw. More than half (54%) of all subjects had 1-32 natural teeth left. These dentate subjects had 47% (mean 13.2, excluding the wisdom teeth) of their natural teeth remaining. Of the remaining teeth, 13% (mean 1.8) were crowned and 5% (mean 0.6) were indicated to be extracted. Among the dentate, 37% (mean 10.4) of their natural teeth were missing and replaced by some type of fixed or removable prosthesis. Eleven per cent (mean 3.1) of missing teeth had not been replaced and were considered not to need prosthetic replacement. However, 5% (mean 1.3) of the missing teeth without prosthetic replacement were judged to need a prosthesis. Among the dentate, 37% wore a complete denture in one jaw; 34% of the dentate subjects used acrylic removable partial dentures (ARPD), and 19% used metallic removable partial dentures (MRPD). Of the dentate, 45% had crowns and fixed bridges. Altogether, 25% wore some kind of combination of fixed and removable prosthesis, whereas 14% had no type of prosthetic rehabilitation at all. The age of the current prosthesis varied from less than one year to over 50 years. Of all the subjects, 37% (6% of the edentulous and 63% of the dentate) had experienced inadequate prosthetic rehabilitation.
本研究的目的是记录赫尔辛基76至86岁居民代表性样本中剩余天然牙的数量，检查义齿修复情况，并评估进一步的义齿治疗需求。无牙颌患者占受试者的46%（168人），男性占40%，女性占48%。在这些无牙颌患者中，94%（158人）上下颌均佩戴全口义齿，2%仅佩戴上颌义齿，4%根本未佩戴义齿。一名无牙颌患者在下颌佩戴种植体支持的覆盖义齿。超过一半（54%）的受试者还剩1至32颗天然牙。这些有牙颌受试者的天然牙留存率为47%（平均13.2颗，不包括智齿）。在剩余牙齿中，13%（平均1.8颗）做了牙冠修复，5%（平均0.6颗）建议拔除。在有牙颌患者中，37%（平均10.4颗）的天然牙缺失并由某种固定或可摘局部义齿替代。11%（平均3.1颗）的缺失牙未做修复，且被认为无需义齿修复。然而，5%（平均1.3颗）未做修复的缺失牙被判定需要义齿修复。在有牙颌患者中，37%在一侧颌骨佩戴全口义齿；34%的有牙颌受试者使用丙烯酸树脂可摘局部义齿（ARPD），19%使用金属可摘局部义齿（MRPD）。在有牙颌患者中，45%有牙冠和固定桥修复。总体而言，25%佩戴某种固定和可摘义齿的组合，而14%根本没有任何形式的义齿修复。当前义齿的使用年限从不到一年到超过50年不等。在所有受试者中，37%（无牙颌患者中的6%和有牙颌患者中的63%）经历过义齿修复不足的情况。
