Pulpless Teeth Research Articles

Therapy for the divergent pulpless tooth by continued apical formation

Clinical experience illustrates the success of endodontic therapy based on the normal physiologic pattern of root development. The technic described brings about the resumption of apical development; after which the root canal can be obliterated by conventional lateral condensation technics.

A practical scheme for identification of the most numerous oral gram negative anaerobic rods

The canal contents of thirty-three cariously and traumatically exposed pulpless teeth were sampled with a special technique and cultured anaerobically for growth in prereduced thioglycollate and forBacteroides melaninogenicus on selective blood agar plates. The presence ofB. melaninogenicus was compared with the presence or absence of eight symptoms associated with pulpal necrosis and the presence or absence of growth in thioglycollate.B. melaninogenicus was found to be significantly related to pain, sinus tract formation, and foul odor. Suggested relationships were found between the organism and the presence of apical sensitivity and local swelling. Growth in prereduced thioglycollate occurred more often from teeth in whichB. melaninogenicus was present. With the sampling technique used, positive growth in the thioglycollate ranged from 88 percent at the initial appointment to 72 percent at the fill appointment.

Rehabilitation rationale for pulpless teeth

The importance of periodontal therapy, oral surgery, and orthodontics in preparing pulpless teeth for the restoration of their clinical crowns has been discussed. A treatment plan developed for the entire masticatory complex, which will place the required treatment regimens in their proper perspective, has been emphasized. 7 Dental restorations may be doomed to failure without these most essential considerations.

The reinforcement of weakened pulpless teeth

1. Pulpless teeth which have been weakened structurally by caries and endodontic procedures need the support of a post-core casting for reinforcement. 2. The casting should be designed to guard against horizontal, as well as longitudinal, fractures of pulpless teeth. 3. The post-core casting is superior to the post-crown in providing this reinforcement because the tooth is independent of any structure to be placed upon it. 4. A method has been described, which utilizes the temporary acrylic resin splint, for the construction of cast post-core for anterior and posterior pulpless teeth directly in the mouth. 5. Two or more post-core castings may be constructed in one operation if the pulpless teeth are in the same quadrant.

Roentgenologic and clinical evaluation of endodontically treated teeth

1. 1. Four hundred thirty-two endodontically treated teeth have been evaluated by roentgenogram from 1 year to nearly 5 years postoperatively. 2. 2. Of this number, there were 198 cases of vital pulp extirpation and 234 teeth in which the pulp had died and the root canal was infected. 3. 3. Of the vital pulp extirpation cases, 90.4 per cent were considered successful on x-ray checkup. 4. 4. Of the pulpless teeth, 89.3 per cent were successful, including those with small preoperative areas of rarefaction as well as those without such areas (putrescent pulp cases). 5. 5. Of 98 teeth with definitive areas of rarefaction, complete or progressive repair occurred in 85.7 per cent. The degree of repair was not altogether related to the size of the area in this series of cases. 6. 6. The percentage of successful results is higher in teeth treated with antibiotics (93.2 per cent) than in those treated with conventional medicaments (86.8 per cent). This may be due to lack of irritation from the antibiotics used. 7. 7. Of 94 cases in which root resection was performed, progressive or complete repair occurred in 95.8 per cent. These cases are in addition to the root canal treatment cases. 8. 8. There appears to be a direct relationship between age and repair of periapical damage, the greater percentage of repair occurring in the younger age group. 9. 9. Poorly filled root canals accounted for a large percentage of failures.

A Case of Replanted Pulpless Tooth and its Prosthetic Treatment

1. 急性歯根膜炎を起した2について, 合釘を撤去しようとしたところ, 不慮の脱臼をきたしたので, この歯牙の抜去と同時に再植を行つた.2. 再植歯根を8カ月間画定した後それに継続歯冠を装着し, その後の経過を合せて2カ年に亘り臨床的, X線的に観察した.3. 臨床的には歯頸部歯肉, 骨植とも隣在歯と変らぬ状態となり, 一応の成功をみた. またX線的には途中著しい歯根吸収が認められたが, 10カ月以後はその吸収像に殆んど変化がなく, 治癒機転は終つたものと考えられる.

Endodontic treatment of pulpless teeth

Endodontic treatment of pulpless teeth

Protective coronal coverage of the pulpless tooth

In the restoration of the pulpless tooth, the utmost care and preoperative planning must be utilized to assure that the remaining tooth structure be given maximum strength. The coronal restoration should be considered at the time of endodontic therapy. A major shortcoming has been failure to cap or tie together the buccal and lingual cusps.

The bacteriology and pathology of the pulpless tooth*

The bacteriology and pathology of the pulpless tooth*

The pulpless tooth in rehabilitation of the mouth

Mouth rehabilitation is facilitated by the use of endodontic therapy to maintain strategically important teeth. If extensive restorative procedures are contemplated, the necessary endodontic procedures should be completed prior to the restorative procedures.

Bacteriologic Status of Periapical Tissue in 150 Cases of Infected Pulpless Teeth

Summary 1. Of 150 cases in which cultures were taken serially of the periapical tissue during root resection, reliable data were available in 109 cases. 2. Of the 109 cases, all cultures taken of the periapical tissue, as well as the controls, were negative in 93 cases (85.3 per cent). 3. Speculation is made regarding the presence and the significance of microorganisms in the periapical tissue in such cases where they were recovered.

Bleaching of the discolored pulpless tooth

Bleaching of the discolored pulpless tooth

Coronal Restoration of the Treated Pulpless Tooth

Endodontics at the present time has its highest degree of effectiveness and success in the maintenance of the pulpless tooth in the mouth in a state of health. This is due to the development of new pharmacologic remedies, treatment concepts, procedures, and techniques for the effective sterilization of the root canal and its subsequent obturation. Because of the utilization and application of knowledge of biologic sciences, doubt no longer exists as to the effectiveness of endodontic therapy or as to why and how the treatment outcome occurs. The return of the pulpless tooth to a state of health must be augmented by a return to function. Fortunately, improved restorative procedures utilizing materials, the validity of which has been proved by scientific methods in the dental materials laboratories, enable us to complete the rehabilitation of the pulpless tooth. Appreciation is expressed to Mr. Richard Scott and Mrs. Gloria Spray for their valued cooperation in the preparation of the illustrations for this chapter, to Dr. F. A. Hohlt for the inlay restorations, and to Dr. R. J. Meyers for the jacket crowns.

Bacteriology in Endodontic Treatment

The successful retention of the treated pulpless tooth as a healthy functioning member of the dental arch is an outstanding achievement. The application of bacteriologie methods to endodontic practice complements sound clinical techniques and judgment. It serves as a continuous control and a measure of aseptic technique, efficacy of drug treatment and surgical débridement. It restores confidence in the practitioner by providing objective evidence to substantiate his skill and competence.

The pulpless tooth

The pulpless tooth

Study of the pathology and bacteriology of the pulpless tooth and its bearing on treatment

Study of the pathology and bacteriology of the pulpless tooth and its bearing on treatment

Isotope determination of root canal failure

The pulpless tooth with the completely obturated root canal space is a perfectly sound member of the dental arch. However, endodontic failures do occur and more than one-half of these failures may be related to the poorly obturated canal. This simple experiment emphasizes the two most important procedures in root canal therapy: (1) thorough canal enlargement by instrumentation and (2) complete canal obturation. Care in the execution of these two procedures, coupled with accurate case selection, should render nearly 100 per cent success in the practice of endodontics.

Restoration of the effectively treated pulpless tooth

As a result of progress through research and development, endodontic procedures are effective in returning the pulpless tooth to a state of health. Inherent characteristics of the pulpless tooth, including brittleness and discoloring tendencies, and extensive diminution of coronal integrity due to the etiologic factors which necessitated the endodontic therapy, require specific considerations in constructing the restoration. Effective restoration of the pulpless tooth subsequent to present day effective endodontic therapy is facilitated by the clinical application of recent developments in dental materials.

The Role of the Pulpless Tooth in Systemic Disease: A Summary

The Role of the Pulpless Tooth in Systemic Disease: A Summary

Combination of Antibiotics and Fungicides Used in Treatment of the Infected Pulpless Tooth

Combination of Antibiotics and Fungicides Used in Treatment of the Infected Pulpless Tooth