744 



Norethynodrel, 358 



antler shedding, 357 

 Normal bone 



criteria, 457 



osteocytes, 486 



preferential resorption, 479 



turnover rate, 457 

 Normal resorption, acceleration of, 488 



parathyroid extract, 488 

 Norway, ancient teeth, 120, 121, 127 

 Nucleated inclusions, cytoplasmic vac- 

 uoles, 489 

 Nucleolar RNA, osteogenesis, 487 

 Nucleotides, 639 

 Nutrients from tooth, caries bacteria, 



277 

 Nutritional canals, alveolar bone, 309 

 Nutritional factors, attrition of sheep's 



teeth, 160, 165 

 Nutritional requirements, streptococci, 



275 

 Nutritional status, dental caries, 265 



Obliteration of dentinal tubules, 112 

 Obstipation, dental erosion, 99 

 Occlusal wear, dental erosion, 112 

 Octopods, boring mechanism, 55 

 Odocoilcus 



columhianiis, 347 



gymnofis, 348, 349 



hem ion us, 355 



virginianiis, 347 

 Odontoblastic layer, 287 

 Odontoblasts, 99 

 Odontoclasts, 96, 333 

 Odontogenesis, 322 

 Odontogenic epithelium, 328 

 Odontogenic tumors, 95 

 Odontome, ia rat, 329 

 Official osteoclasts and giant cells, 527 

 Old and new bone, 475 

 Older individuals, eating patterns, 267 

 Opacity 



enamel, 131 



enamel erosion, 104 

 Opal phytoliths, abrasion of sheep's 



teeth, 166 

 Opercular plates, 7 



SUBJECT INDEX 



Optical microscopy, shell etching, 65 



Oral cavity, bacterial colonization, 267 



Oral citrate, 115 



Oral debris, endogenous, 117 



Oral environment, erosion, 113 



Oral epithelium, 323 



Oral microbiota, 262 



Oral soft tissue 



hvperactivity, 100 



twitching, 100 

 Oral streptococci, 270 

 Orchiectomy, 433 

 Oreton, 360 

 Organic acids 



herbage, 94 



in vitro erosion, 166 

 Organic bonding material, dentin, 



169 

 Organic coating 



apatite crystals, 248 



protection of enamel surface, 220, 

 222 

 Organic content, enamel caries, 231 

 Organic films, inhibition of acid action, 



117 

 Organic-inorganic linkage, enamel, 



140 

 Organic mass 



bone, 475 



calcified cartilage, 477 



degree of calcification, 475 



osteochist nuclei, 479 



resorption, 486 



woven bone, 479 

 Organic material 



dentin caries, 188 



enamel, 116 



enamel caries, 184, 188, 191 



eroded tooth surface, 108 



resorbable tissues, 97 

 Organic matrix 



see also Matrix 



basophilia, 531 



carious enamel, 196, 197 



carious process, 206 



enamel, 97 



osteoclasis, 528 

 Organic phase, resorption of, 580 



