Figure 1. (a) Periapical radiograph immediately postoperatively and recall radiograph at 3 months. (b) Corresponding subtraction image.
The colour-converted region of interest demonstrates the increase in density over 3 months projected on top of the radiograph obtained immediately postoperatively.
Figure 2. (a) Periapical radiograph at 3 months and recall radiograph at 12 months. (b) Corresponding subtraction image.
The colour converted region of interest demonstrates the increase in density over 12 months projected on top of the radiograph obtained at the 3 months recall.
Figure 3. The inter- and intra-examiner agreement rates expressed as kappa values.
Ando S, Nishioka T, Shinoda K, Yamano H, Ozawa M (1969) Computerized numerical evaluation of radiographic images. The destruction and reduction of bone tissue in periodontal areas. Journal of Nihon University School of Dentistry11, 41-7.
Bender IB (1982) Factors influencing the radiographic appearance of bony lesions. Journal of Endodontics 8, 161-70.
Bender IB, Seltzer S (1961a) Roentgenographic and direct observation of experimental lesions in bone. Part I. Journal of the American Dental Association 62, 152-60.
Bender IB, Seltzer S (1961b) Roentgenographic and direct observation of experimental lesions in bone. Part II. Journal of the American Dental Association 6, 708-16.
Bender IB, Seltzer S, Soltanoff W (1966) Endodontic success: a reappraisal of criteria. Oral Surgery Oral Medicine OralPathology 22, 790-802.
Brynolf I (1970) Roentgenologic periapical diagnosis. Part I. Reproducibility of interpretation. Svensk Tandlakasetidskrife 63, 339-44.
Duinkerke ASH,Van der Poel ACM, De Boo Th, Doesburg WH (1975) Variations in the interpretation of periapical radiolucencies. Oral Surgery Oral Medicine Oral Pathology 40, 414-22.
Duinkerke ASH, van der Poel ACM, van der Linden FPG, Doesburg WH, Lemmens WAJG (1977) Evaluation of a technique for standardized periapical radiographs. Oral Surgery Oral Medicine Oral Pathology 44, 646-51.
Gelfand M, Sunderman EJ, Goldman M (1983) Reliability of radiographic interpretations. Journal of Endodontics 9, 71-5.
Goldman M, Pearson AH, DarzentaN (1972) Endodontic success - who's reading the radiograph? Oral Surgery Oral Medicine Oral Pathology 33, 432-7.
Gratt BM, White SC, Lucatorto FM, Sapp JP, Kaffe I (1986) A clinical comparison of xeroradiography and conventional film for the interpretationof periapical structures. Journal of Endodontics12, 346- 51.
HalseA,MolvenO,GrungB(1991) Follow-upafter periapical surgery: the value of the 1-year control. Endodontics and Dental Traumatology 7, 246-50.
Kassle MJ, Klein AJ (1976) Television radiographic evaluation of periapical osseous radiolucencies. Oral Surgery Oral Medicine Oral Pathology 41, 789-96.
Klein AJ (1967) Clinical television research instrumentation. Journal of the American Dental Association 74,1210-9.
Kullendorff B, Grondahl K, Rohlin M, Henrikson CO (1988) Subtraction radiography for the diagnosis of periapical bone lesions. Endodontics and Dental Traumatology 4, 253-9.
LavelleCL, WuC-J (1995) Digital radiographic imageswill benefit endodontic services. Endodontics and Dental Traumatology 11, 253-60.
LeQuire AK, Cunningham OJ, Pelleu GB (1977) Radiographic interpretation of experimentally produced osseous lesions of the human mandible. Journal of Endodontics 3, 274-6.
Pascon EA, Introcaso JH, Langeland K (1987) Development of predictable periapical lesion monitored by subtraction radiography. Endodontics and Dental Traumatology 3,192-208.
Pauls V, Trott JR (1966) A radiological study of experimentally produced lesions in bone. Dental Practice16, 254-8.
Petersson AR, Petersson K, Krasny R, Gratt BM(1984) Observer variations in the interpretation of periapical osseous structures: a comparison between xeroradiography and conventional radiography. Journal of Endodondics10, 205-9.
Ramadan AE, Mitchell DF (1962) A roentgenographic study of experimental bone destruction. Oral Surgery Oral Medicine Oral Pathology15, 934-43.
Regan JE, Mitchell DF (1963) Evaluationof periapical radiolucencies found in cadavers. Journal of the American Dental Association 66, 529-33.
Reit C, Hollender L (1983) Radiographic evaluation of endodontic therapy and the influence of observer variation. Scandinavian Journal of Dental Research 91, 205-12.
Schwartz SF, Foster JK (1971) Roentgenographic interpretation of experimentally produced bony lesions. Oral Surgery Oral Medicine Oral Pathology 32,606-12.
Shoha RR, Dowson J, Richards AG (1974) Radiographic interpretation of experimentally produced bony lesions. Oral Surgery Oral Medicine Oral Pathology 38, 294-303.
Tidmarsh BG (1987) Radiographic interpretation of endodontic lesions - a shadow of reality. International Dental Journal 37, 10-5.
Updegrave WJ (1951) The paralleling extension-cone technique in intraoral dental radiography. Oral Surgery Oral Medicine Oral Pathology 41,1250-61.
Wengraf A (1964) Radiologically occult bone cavities. An experimental study and review. BritishDentalJournal117, 532-6.
Zakariasen KL, Scott DA, Jensen JR (1984) Endodontic recall radiographs: How reliable is our interpretation of endodontic success or failure and what factors affect our reliability? Oral Surgery OralMedicine Oral Pathology 57, 343-7.