Table 2 Characterization of NMD celluloid dentures by handheld Raman and µFTIR
Object | NMD description | Handheld Raman | µFTIRa | |
|---|---|---|---|---|
Dental plate | Teeth | |||
| Full upper set of celluloid with human teeth. S.S. White 1890–1892 | Celluloid: 556, 650, 709, 861, 915,950, 1131, 1246, 1284, 1372, 1452, 1731 cm−1 Vermilion: 260, 348 cm−1 | Human teeth (hydroxyapatite): 432, 583, 961, and 1071 cm−1 | Celluloid: 840, 1064, 1278, 1657, 1730, 2963, 3452 cm−1 Degree of substitution: 2.12 |
| Maxillary dental plate with swaged gold base with celluloid overlay and porcelain teeth. Late nineteenth century | Celluloid: 555, 650, 706, 860, 915, 951, 1131, 1246, 1286, 1373, 1453, 1733 cm−1 Vermilion: 260, 349 cm−1 | Porcelain: 1408 and 1873 cm−1; broad bands between 1100 and 2200 cm−1) | Beeswax: 720, 1173, 1462, 1736, 2918, 2851, 2954 cm−1 (superficial microsample) |
| Celluloid maxillary dental plate. Vitallium (chrome-cobalt alloy) cast base with porcelain teeth, circa 1930 | Celluloid: 556, 650, 706, 860, 915,951, 1131, 1251, 1284, 1372, 1452, 1726 cm−1 Phthalate: 1043, 1596, 1603, 1726 cm−1 Vermilion: 260, 349 cm−1 | Porcelain: 460 cm−1; broad band between 1100 and 2200 cm−1 | Celluloid: 839, 1063, 1278, 1657, 1729, 2963, 3473 cm−1 Degree of substitution: 2.03 |
| Taken out of storage. Had never been labelled | Celluloid 556, 650, 710,864, 917, 950, 1284, 1371, 1444, 1730 cm−1 Vermilion: 256, 348 cm−1 | Not analyzed | Celluloid: 843, 1066, 1280, 1649, 1730, 2963, 3452 cm−1 Degree of substitution: 1.87 |
| Taken out of storage. Had never been labelled | Celluloid: 556, 652, 710, 862, 915, 951, 1131, 1246, 1284, 1371, 1445, 1728 cm−1 Vermilion: 256, 345 cm−1 | Not analyzed | Celluloid: 841, 1068, 1279, 1649, 1730, 2964, 3434 cm−1 Degree of substitution: 1.96 |
| Partial set of celluloid with porcelain teeth. S.S. White 1890–1892 | Celluloid: 556, 650, 706, 860, 915, 951, 1131, 1246, 1286, 1373, 1453, 1733 cm−1 Vermilion: 260, 349 cm−1 | Porcelain: 460 cm−1; broad band between 1100–2200 cm−1 | Not analyzed |
| Taken out of storage. Had never been labelled | Celluloid: 556, 649, 709, 860, 915, 951, 1131, 1246, 1371, 1452, 1728 cm−1 Vermilion: 263, 349 cm−1 | Not analyzed | Not analyzed |
| Taken out of storage. Had never been labelled | Celluloid: 556, 649, 710, 861, 915, 950, 1131, 1445, 1732 cm−1 Vermilion: 256, 348 cm−1 | Not analyzed | Not analyzed |
| Taken out of storage. Had never been labelled | Celluloid: 556, 652, 710, 864, 917, 953, 1131, 1251, 1284, 1372, 1447, 1728 cm−1 Vermilion: 259, 349 cm−1 | Not analyzed | Not analyzed |
