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Radiographic Recognition of Dental Implants as an Aid to Identifying the Deceased Nattawut Rodchom No 51312310.

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Presentation on theme: "Radiographic Recognition of Dental Implants as an Aid to Identifying the Deceased Nattawut Rodchom No 51312310."— Presentation transcript:

1 Radiographic Recognition of Dental Implants as an Aid to Identifying the Deceased Nattawut Rodchom No 51312310

2 Radiographic Recognition of Dental Implants as an Aid to Identifying the Deceased

3 Dental Implant 1.Fixture 2.Abutment 3.Crown

4 Radiographic

5 review 1992 Sewerin = indentified the influence of various features of implant 2006 Michelinakis = developed computer software to assist in the indentification of implant

6 Material and Methods  Implant type  Radiograph film = Nikon 2000 camera (Tokyo,Japan)  Type of radiograph = mouth  200 radiograph images

7

8 Material and Methods Implant Recognition System (IRS) inter-examiner / intra- examiner The McNemar’s test

9 Result TABLE 1—Summary of the number of correct implant identificationradiographic images at each assessment. Examiner 1 Examiner 2 First assessment without IRS 111 (55.5%) 77 (38.5%) Second assessment without IRS 119 (59.5%) 80 (40%) First assessment with IRS 131 (65.5%) 86 (43%) Second assessment with IRS 123 (61.5%) 80 (40%)

10 TABLE 2—McNemar’s tests results Test No. Test McNemar’s Statistic Freedom Pr > S Significance 1 EX1-IRS 2.0 1 0.16 NO 1 st vs 2 nd 2 EX1+IRS 3.6 1 0.06 NO 1 st vs 2 nd 3 EX2 –IRS 0.2 1 0.64 NO 1 st vs 2 nd 4 EX2 +IRS 1.1 1 0.30 NO 1 st vs 2 nd 5 EX1 –IRS+IRS 10.6 1 <0.0011 YES

11 Result TABLE 2—McNemar’s tests results Test No. Test McNemar’s Statistic Freedom Pr > S Significance 6 EX2-IRS+IRS 1.2 1 0.27 NO 7 Total-IRS+IRS 9.0 1 <0.0027 YES 8 -IRS EX1 VS EX2 36.25 1 <0.0001 YES 9 +IRS EX1 VS EX2 58.7 1 <0.0001 YES 10 Total EX1 VS EX2 92.9 1 <0.0001 YES

12 DISCUSSION The sample of 200 implant images by Dentists and odontologists from 12 countries 22 manufacturers The most manufacturers Nobel- Biocare,Straumann,Branemark

13 DISCUSSION Differentiation intraoral and extraoral radiographs assessed in a single day Intra-Examiner = no significant Inter-Examiner = significant Implant Recognition System ( IRS )

14 conciusio n - Nonstandardized radiographs - Prior knowledge of each examiner - Modifications to the IRS

15 สวัสดี ครับ


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