Page 19 - My FlipBook

ILLUSTRATIONS 15

FIG. PAQE
134. Types of abnormal superior third molars 261
135. One of the many abnormal conditions found when extracting upper
second and third molars 26U
136. Position for extracting right upper third molars 263
137. Position for extracting upper left third molars 264
138. Types of inferior third molars 265
139. Elevator beaked forceps for extracting third molars 266
140. Position for extracting right inferioi third molars 266
141. Position for extracting left inferior third molar 267
142-. Complete set of deciduous teeth witli the first permanent molar added 270
.
143. Irregularity resulting from premature extraction of first deciduous molar 271
144. Horizontal injection 275
145. Perpendicular injection 276
146. Drawing representing the positions of needles in local anesthesia 277
. .
147. First position in the mandibular injection 278
148. Second position in the mandibular injection 279
149. Third position for the mandibular injection 280
150. Fourth and last position for the mandibular injection 281
151. A very clear and easy case with the needle in the best position for the
mandibular injection 282
152. A difficult case where the lingula is almost entirely wanting .... 283
153. Same mandible as shown in Fig. 153 with the needle passed to position
sufficiently high to be above the lingula 284
154. A mandible which belongs to a class on which it is very hard to give
a mandibular injection 285
155. First and ideal position for giving the mental injection 286
156. Second position for giving the mental injection 287
157. Position of needle in giving the infra-orbital injection 289
158. Final position of the needle in giving the zygomatic injection 291
. . .
159. Cavity preparation for a Class Two porcelain inlay 297
160. A Class Three cavity labial approach for porcelain inlay 298
161. A Class Three cavity labial approach for porcelain inlay 298
162. A Class Three cavity lingual approach for porcelain inlay 299
163. A Class Four cavity incisal approach for porcelain inlay 300
164. A Class Four, plan one, inciso-proximal approach for porcelain inlay 300
165. A Class Four, plan two, with double step for porcelain inlay .... 301
166. A Class Four, plan three, for porcelain inlay 302
167. Class Five cavities for porcelain inlay 303
168. Incisal cavity for porcelain inlay 304
169. A Class Six cavity using pin anchorage for porcelain inlay .... 305
170. Chisels for securing outline form 314
171. Spoons for removing softened dentine 315
172. Enamel hatchets for completing outline form and flattening dentine
walls 316
173. Instruments for cutting point angles and sharpening base line angles . 317
174. Hatchets and hoes for cutting ascending line angles and completing
retention form 318
175. Gingival marginal trimmers 319
176. Gold building pluggers 320
177. Dr. Rathbun's dontech with teeth in position ready for practice work 321
178. A student who has kept his appointment with his patient, "Mr. Den-
tech" 322
179. Forceps made after the patterns of the author 323
180. Foi-fops made after the patterns of the author 324