afE'* .Mm if Li SURGEON GENERAL'S OFFICE i Section, JVo. J ItZZ -371 SS£gl8l QUIZ QUESTIONS, COURSE ON DENTAL PATHOLOGY AND THERAPEUTICS, PHILADELPHIA DENTAL COLLEGE. PROF. J. FOSTER FLAOG. D. D. S. answered by WILLIAM C. FOULKS, D. D. S. President of the Quiz Association of the Philadelphia Dental College. GEO. A. FOWLER & CO. 2228 RIDGE AVENUE, 1882. V\fU F57 + 4 Entered according to the Act of Congress, in the year Eighteen hundred and Eighty Two—1882, by WM. C. FOULKS, D. D. S, in the Office of the Librarian of Congress, at Washington, D. C. ALL RIGHTS RESERVED. DEDICATION. J. FOSTER FLAGG, D. D. S. IN RECOGNITION OF HIS UNTIRING, PERSEVERING AND FAITHFUL LABOR JN THE FURTHERANCE OF A PROPER, COMFORT-GIVING AND SCIENTIFIC PRACTICE OF DENTISTRY, THIS WORK IS RESPECTFULLY DEDICATED •* -» PREFACE. Nearly all .the questions in this little book were first arranged by Prof. J. Foster Flagg, D. D. S. Subsequently they were printed in pamphlet form by the Philadelphia Dental College for the benefit and guidance of the students. The answers have been compiled from " notes " on Dr. Flagg's lectures, therefore, no claim to originality is advanced, other than combination of Questions and Answers in book form. W. C. F. CONTENTS. CEXERAL PRINCIPLES.......1__v>C> Sensitive Dentine .......2l>__'JS Superficial Caries ,...... 2S Simple (.Varies.........2«..) Deep Seated Caries.......:;«)__.)(', Pulp Capping..........")(*,__(',4 Complicated Caries.......C,4_71 Extirpation of Dental Pulp .... 71—7"> Dental Exostosis .......7-3—77 Fused Teeth.......... 77 Attached Teeth......... 7S (Jeminous Teeth......... 7—S5 6 5 JJ 15 3 55 5 5 53 10 APPENDIX. MISCELLANY. What are the essentials to be recognized in con- nection with pulp extirpation ? Ans. Free openings, easy access to pulp cavities and canals, soothing and cleansing medication, thorough, gentle manipulation, and the recognition that more or less time is required for the restora- tion of comparitive normality about the apex of the root. Is it always possible to clean and fill to the very apex of roots ? Ans. It is not. Many roots, from their small size, peculiar shape, position, &c, are accessible for only a limited portion of their extent. What are the six considerations in connection with pulp irritation from disease of the surrounding parts ? Ans. Salivary calculus, tartar, looseness of tooth, abscess and atrophy or absorption of either gum, alveolar process, or roots. MTSCELLANY. 89 If deciduous first molars are extracted between the ages of five and seven years, what injury may be inflicted? Ans. Mechanical injury to the permanent bi- cuspid ; for at this time the roots of the deciduous molar are but slightly absorbed, and clasp the nearlv developed crown of the bicuspid. In what rare cases of irritation does the *' health line " remain unchanged ? Ans. Pulsating pulps, nodular calcification, api- cal or circumscribed exostosis and circumscribed necrosis. How is pulp irritation from loss of tooth sub- stance distinguished from sensitive dentine ? Ans. If pulp is irritated, the most tender spot is directly over the portion or portions of pulp most nearly exposed; if sensitive dentine, it is usually more on one edge than in the central part of the abrasion. What is the difference in the character of the pain arising from irritation of the pulp from loss of tooth substance by attrition, and that from sen- sitive dentine? Ans. The pain from sensitive dentine is not pos- itively located unless touched, but gives a general sense of uneasiness through the teeth, jaws, cheeks, eye and adjacent parts; these symptoms appear gradually and continue for long periods of time, 90 MISCELLANY. exhibiting no paroxysms of severe suffering. The pain from irritated pulp is generally more decidedly localized even to the affected tooth; it appears quite suddenly, increasing in intensity day by day, developing paroxyms of increasing severity. Hot and cold applications cause much pain; cooling liquids relieve the irritation induced by hot drinks, such as soup, coffee, tea, chocolate &c. while tepid water affords equal relief when the irritation has resulted from the contact of ice-cream, ice- water &c. What in this connection is an important diagnos- tic between sensitive dentine and an almost exposed pulp? Ans The possible cessation of response on the part of sensitive dentine after only one touch, and the probable continuation of response on the part of an almost exposed pulp after any number of touches. What is usually the best method of remedying irritation of the pulp from loss of tooth substance ? Ans. The cutting away of the tooth, which an- togonizes and abrades the one giving pain, together with the judicious selection of three or four not unduly worn, articulating teeth, for the purpose of making shallow cavities and introducing ordinary MISCELLANY. 91 crown or surface fillings, that further abrasion may be precluded, or, at least, retarded. What condition is sometimes found analogous to a loss of tooth structure by attrition, and eventu- ating in the same symptoms ? Ans. Sometimes a marked clean cupping occurs on the cutting edges, cusps and articulating faces of teeth. To what is this ckie ? Ans. It is not due entirely to mastication, but may be regarded as one peculiar phase of dental caries; the exposed dentine being different in ap- pearance from the polished and hardened surface usually resulting from the wear of mastication. The dentine (in this cupping caries) seems to be softened, and therefore yields more readily than the enamel to the disintegrating influence of mas- tication ; in consequence of this, the interior and edges of such cavities present a smooth, defined and clean appearance. How is this condition treated? Ans. In the same manner as loss of tooth sub- stance by attrition. Upon what is fracture of the teeth dependent ? Ans. Upon one of four causes. Name them. Ans. 1st. Impinging upon some hard substance during mastication, such as bone, coal, shot, nut- shells, oyster-shell, metal fillings loosened and de- 92 MISCELLANY. tached by pressure of food, &c, or, 2nd. Where decay has largely progressed, leaving thin walls of enamel which are easily broken by the pressure of ordinary food, such as pop-corn, candy, bread-crust, or even soft bread. 3rd. Fracture from blows or falls, or, 4th. (Very unusual) fracture from con- gestion of the pulp. When this occurs, there is usually a sense of fulness in the tooth, rapidly pass- ing into extreme tension or pain, or into tense numbness and growing uneasiness. Give some important points in relation to the re-establishment of normality in diseased tissue. Ans. First. In proportion to the extent and sever- ity of disease in connection with any tissue, is the re-establishment of normality rendered impossible. Second. Slight irritation usually permits of a re- turn to comparative normality, but a decided irri- tation renders such return less probable. Third. Slight inflammation sometimes permits of the re-establishment of apparrent normality but it much more frequently gives decided evidence of what is termed " weakness " of the part, by reason of irritation, if not of recurrence of positive, though slight, inflammation. Fourth. Severe inflammation may be regarded, practically, as a deviation so great as to preclude the possibility of a return to absolute health on the part of any organ or tissue so affected. What is meant by " thoroughness" as under- MISCELLANY. 93 stood from the "New Departure" standpoint? Thoroughness means tooth saving not "tooth filling'" exemption from pain, not "infliction;" gen- tle yet thorough impact, not "forcible conformity;" harmony, not golden jarring ; resistence proportion- ed to demand; " perfect adaptation " to the require- ments of the case, whether "tightness" or looseness; comfortable service rather than "elegance of finish." Under what circumstances is "external irritation by forcible withdrawal of pulp " easily possible ? Ans. During removal of recently devitalized pulps, particularly from teeth of Sanguo-lymphatic, Nervo- lymphatic, or Bilio-lymphatic patients. Is it proper to place medicaments in teeth (which have had peridental irritation from putrescent pulps) immediately after giving relief by drilling into pulp cavities ? Why ? Ans. It is not; as increased irritation, either by permeation of already irritated tissues, or by me- chanically obstructing the only avenue for the pas- sage of existing effusions (by inspissation of contents of pulp cavities and canals) would follow. Espe- cially should medication on cotton pellets or twists be avoided. What is the one symptom which indicates very reliably the complex pathological condition of peri- odontitis from inflammation of a pulp? Ans. The peculiar duplex character of the pain, 91 MISCELLANY. by which is added to the tenderness, upon pressure, the throbbing and the sense of tooth elongation, a decided alternate exacerbation and amelioration of suffering. Is paroxysmal suffering or exacerbation con- nected with true periodontitis? Ans. Usually it is not; but when such combina- tion is present, a pulp is dying from peridental irritation, especially when between paroxysms a response to hot or cold fluids is had. This holds good so far as single rooted teeth are concerned. Upon what do acute and chronic forms of peri- odontitis depend ? Ans. Upon temperament and physical condition. All high grade temperaments (from first to third grade) are liable to the acute form, provided the system is not depressed. Low grade temperaments (such as Bilio-lymphatic) have chronic form. What is the difference between the two forms ? Ans. Time of duration. If lasting from one to three or five days, it is acute, after this it is called chronic. What is the line of distinction between period- ontitis and alveolar abscess ? Ans. As soon as one drop of pus forms, periodon- titis ends and abscess begins. What medicaments are recommended for con- trolling hemorrhage ? Ans. Tine. Erigeron Canadensis is used where V / MISCELLANY. 95 patient is or bilious type, dark hair, dark eyes, &c. For those with light hair, fair skin, &c, use Tine. Chenapodium Album. Both are styptics and hae- mostatics. Dose: gtts. in. to v. once every half hour, or gtt. i. every ten or fifteen minutes until effects are produced. When is Tine, of Iodine used in a tooth ? Ans. In treatment of fungus gum or pulp, and for pain obtunding and devitalizing purposes in children's teeth. What is the treatment for induration of tooth tissue ? Ans. Nothing can be done. Systemic treatment is the only hope. What is the cause of induration? Ans. It appears to be due to calcification of root structure, and consequent exfoliation of the tooth. Under what three heads is "excess of filling material" considered ? Ans. First. On the articulating surface, bringing all impact on one tooth. Second. On any face of a tooth, where the cav- ity impinges on the cementum. Third. Excess through apical foramen. Which form of excess is incurable ? Ans. Excess through apical foramen, especial- ly when canal has been solidly filled with foil, oxy- chloride and cotton, gutta percha &c. What is the first indication for periodontitis from putrescent pulp ? 96 MISCELLANY. Ans. Give relief by drilling vent hole, or in some manner permitting the mephitic gas to escape. What are three considerations under this head? Ans. First. How to drill vent hole with least infliction to patient. Second. Where an opening into the pulp cham- ber can be effected with the least injury to the tooth, and the best lookout for future considerations. Third. Gaining a fair access to canals in order to obtain the best results. Where are " relief holes " usually drilled ? Ans. From the incisors to the second bicuspids at the necks disto-buccally. On the second bicuspids buccally. On the molars mesio-buccally. How long has the drilling of vents been in practice ? Ans. About forty years. What is the result of drilling a vent ? Ans. It not only affords an avenue for the escape of mephitic gas, but also permits the pericemental membrane to relieve itself of exudations. What is meant by " tiding over " a pulp ? Ans. At times, in persons of low grade tempera- mental attributes (especially in warm weather), the system is in such weakened condition as not to have sufficient strength to set up a flow of blood, power- ful enough to destroy a pulp, even when arsenic is applied for the purpose of devitalization. The case is then treated in such manner as to give the great- A 11 S E N I C. 97 est amount of comfort until the system is'in proper condition to respond to arsenic. "What are signs ? What are symptoms ? Ans. Signs are what Doctors should observe. Symptoms are what patients feel and should describe. Arsenic. What time is required for arsenical devitaliza- tion of the pulp? Ans. There is no relation between time and arsenical action ; the time required is governed en- tirety by temperament and physical condition. Why is it improper to apply arsenic to an in- flamed pulp ? Ans. Because, on account of the full and distended blood-vessels and retarded circulation, its dynamic and vital impression cannot be produced. What is the effect of arsenic when applied on the surface of partially devitalized pulps ? Ans. No effect whatever. What effect is produced by arsenic when applied to a dead pulp ? Ans. No effect. Does the presence of the arsenical application arevent decomposition of the pulp ? Ans. It does not. If arsenic is sealed in the pulp cavity of a per- fectly developed tooth, can it pass through dentine ind cementum? Ans. It cannot. 98 OXY-CHLORIDE OF ZINC. If arsenic, when applied to a tooth, passes through the dentine and affects the pulp, why will it not pass through dentine (when sealed in pulp cavity) and affect the cementum ? Ans. Because, the dentine being dead, offers an effectual barrier to its passage. How soon after application of arsenic is it possi- ble for alveolar abscess to supervene ? Ans. It depends entirely upon temperament, physical condition, &c. Generally from one month to a year. Oxy-Chloride of Zinc. Does Oxy-Chloride of Zinc possess the power of mummifying pulps which may die under it ? Ans. It possesses no such power. Is Oxy-Chloride used as a permanent fillinsf material ? Ans. It is not, except in rare cases. Why? Ans. Because it fails in two ways: 1st. From attrition; 2nd. From solution or disintegration at the cervical portion of the filling. What is it especially used for ? Ans. As a lining to cavities having thin, frail walls. in li^ ffJiA -/~ &&*v