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Some have advocated a more permanent technique involving the placement of a permanent pulp cap (Reynolds and Hall, 1979). RCT is considered successful if clinically pretreatment clinical signs and symptoms resolve within a few weeks and the tooth is painless, presenting healthy surrounding soft tissues and no increased mobility. Alternatively a Lentulo spiral file can be placed on an endodontic handpiece to spiral the filling material into the canals. Moreover, adverse reactions are virtually certain if degenerating pulp tissue is allowed to remain in the canals for more than a few days. If the canal cannot be properly cleansed of necrotic material, sterilized, and adequately filled, endodontic therapy is more likely to fail. Pulpotomy is a minimally invasive procedure performed in children on a primary tooth with extensive caries but without evidence of root pathology. During a pulpectomy, the dentist will remove the entire pulp tissue so they can clean the crown and roots of the tooth and then fill it with a therapeutic filling material. A pulpectomy involves complete pulp tissue removal from the crown and root and is indicated when no vital tissue remains. However, Trope suggests that the pulp contents be removed at the emergency visit and a tetracycline-corticosteroid combination (Ledermix; Sigma Pharmaceuticals Pty Lid., Croydon, Victoria, Australia) be placed in the root canal.48 He believes that this combination decreases the inflammatory response after replantation to allow for more favorable healing than in those teeth that do not receive the medicament. The morphology of the root canals in primary teeth makes endodontic treatment difficult and often impractical. Root canal pluggers may be used to condense the filling material into the canals. An apexification procedure allowed this immature permanent tooth to be obturated successfully with gutta-percha (GP). preferred root canal filling material. From the clinical aspect the endodontic treatment is divided into two groups: (1) teeth with pulp vitality (biopulpectomy) and (2) pulpless teeth (necropulpectomy). Aminabadi and colleagues have demonstrated that while primary second molars are more accessible than first molars, all of them are negotiable.20 In addition, other studies have investigated ultrasonic instrumentation21 and root apex locators22 in the root canal treatment of primary teeth. Many dentists prefer to use root canal instruments placed in a special rotary handpiece and nickel titanium files for root canal debridement. Jeffrey A. As aqueous vehicles favor a high degree of solubility, they will cause a depletion of the paste from the root canals, In vitro studies found that Metapex demonstrated minimal inhibition of 23 strains of bacteria isolated from infected root canals of primary molars and three nonstandard bacterial strains using agar diffusion assay [, Maisto’s paste, introduced in 1967, includes both zinc oxide and iodoform, with parachlorophenol camphor, lanolin, and thymol. Hibbard and Ireland studied the primary root canal morphology by removing the pulp from extracted teeth, forcing acrylic resin into the pulp canals, and dissolving the covering of tooth structure in 10% nitric acid.19 It was apparent that, initially, only one root canal was present in each of the mandibular and maxillary molar roots. Lawrence Kotlow DDS, in Principles and Practice of Laser Dentistry, 2011, Primary teeth that have exposed pulp tissue resulting from caries, mechanical removal of carious tissue, or preventive procedures on severely abraded teeth require a pulpotomy or pulpectomy.52,53 In a pulpotomy, as defined by the American Academy of Pediatric Dentistry, the coronal pulp is amputated and the remaining vital radicular pulp tissue surface is treated with a medicament (e.g., formocresol, ferric sulfate)54 or with electrocautery to preserve the pulp's health. Pulpectomy: immediate root canal filling with calcium hydroxide. Each canine tooth is cut off level with adjacent teeth, using tapering crosscut bars or Damascus separating disks (William Dixon, Inc., Carlstadt, New Jersey) attached to a dental drill. The excess thin paste may be removed with paperpoints and Hedström files. The pulp filaments from the root canals are removed with a fine barbed broach; considerable hemorrhage will occur at this point. Vitapex (New Dental Chemical Products Co. Ltd., Tokyo, Japan)/ Diapex: 30 % calcium hydroxide, 40.4 % iodoform, and 22.4 % silicone oil. Even though trauma may result in restoration dislodgement or perhaps even fracture of the tooth, the tooth will have survived at least one more traumatic experience. 6). Gutta-percha is then condensed against the MTA barrier at a subsequent appointment (Fig. Subsequently, when root formation is completed, a pulpectomy is performed, followed by placement of the definitive restoration or crown, if needed. Though overall treatment time is greatly reduced, the shortened root and thin walls continue to place the tooth at risk for subsequent cervical root fracture. The variations included lateral branching, connecting fibrils, apical ramifications, and partial fusion of the canals. Mineral trioxide aggregate (MTA) has also been used as therapeutic pulp-dressing agent.55. Disinfection with irrigating solutions is an important step in assuring optimal bacterial decontamination of the canals. An undistorted radiograph before performing root canal treatment is essential to assess canal morphology (Fig. [30] S. en C.S. David T. Brown, Mathew T. Kattadiyil, in McDonald and Avery's Dentistry for the Child and Adolescent (Tenth Edition), 2016. The excess thin paste may be removed with paper points and Hedström files. If the second primary molar is lost before the eruption of the first permanent molar, the dentist is confronted with the difficult problem of preventing the first permanent molar from drifting mesially during its eruption. In A Consumer's Guide to Dentistry (Second Edition), 2002. More recently, the surgical techniques of pulpectomy and pulpotomy have been popularized as alternatives to canine tooth extraction. The root canal is then irrigated with sterile saline. Root canal instrumentation may be facilitated with the judicious use of this mechanical technique, especially in canals that are difficult to negotiate with hand instruments. The tooth may or may not have a history of painful pulpitis, but the contents of the root canals should not show evidence of necrosis (suppuration). Metapex (Meta Biomed Co., Ltd. Cheongju City, Korea): calcium hydroxide with iodoform, Kri paste(Pharmachemie AG, Switzerland): iodoform (80.8 %), camphor, parachlorophenol, menthol, Maisto’s paste: zinc oxide and iodoform, with parachlorophenol camphor, lanolin, and thymol, Endoflas (Sanlor & cfa. Robert J. Adams, in Laboratory Animal Medicine (Second Edition), 2002. Zinc oxide eugenol or zinc oxide eugenol/iodoform combined with Ca(OH) 2 appears to be the materials of choice if primary teeth are not nearing exfoliation. Pulpectomies, on the other hand, refer to the total removal of the pulpal tissue. The canals should then be dried with sterile paperpoints. During instrumentation, these curves increase the chance of perforation of the apical portion of the root or the coronal one-third of the canal into the furcation [. A pulpectomy is defined as a root canal procedure for pulp tissue that is irreversibly infected or necrotic as a result of caries or traumatic injury. 13-12) or if the root canals show evidence of necrosis (suppuration). The purpose of the present retrospective study was to assess the success rates of root canal treatment of Removal of organic debris is the main purpose of canal instrumentation. Radiographic lesions present preoperatively should resolve within 6 months, as evidenced by bone deposition and a decrease or disappearance or at least no change in pretreatment radiolucent areas. The aqueous, viscous, or oily vehicle used in the formulation of the root canal filling paste impacts the speed of ionic dissociation. Roots of the primary teeth will begin to resorb as soon as the root length is completed. Therefore, an intra-radicu-lar filling material should be non-toxic and easily resorbable. About The … Cautious manipulation is important, however, to prevent breaking the file or overinstrumentation of the canal and apical tissues. VARIOUS ROOT CANAL OBTURATING MATERIALS FOR PRIMARY TEETH Most commonly used materials for primary root canal fillings are Iodoform based pastes Walcoff paste KRI paste Maisto paste Vitapex/metapex Endoflas Zinc oxide … Rubber dam isolation is always desirable when pulp therapy is performed. The criteria for pulpectomy, as well as the technique used remained identical, allowing comparison of the effectiveness of both filling materials. Figure 35.8. Ralph E. McDonald, ... Jeffrey A. No pathologic root resorption, furcation/apical radiolucency [, Radiographically, success is defined either as when the radiolucency observed at the baseline did not increase [. The success of pulpectomy in primary teeth depends on selecting the ideal root canal filling material. Pulpectomy : Definition, Indication and Contra-indication. The use of gutta-percha or silver points as a root canal filling material in primary teeth is contraindicated as these would not resorbe and It is also "spun-down" into the canals using a lentulo spiral * running counter-clockwise on a slow speed handpiece. Even though a few reports of revitalization exist, the chances for revitalization are remote at best. Lasers provide a safe, effective, nonchemical alternative for pulpotomies.59,60 With more than 6 years of results on more than 5000 laser pulpotomies showing excellent results, the author can confirm the safety and effectiveness of this technique on children without using chemicals or electrosurgery (Figure 12-25). The laser technique required less time for completion of the cleaning and shaping procedures when compared with both rotary or hand instrumentation [. The primary components of KRI paste are zinc oxide and iodoform. Small Kerr files may be used to apply the paste to the walls. Similarly, longer-than-normal retention of a second primary molar may be desired when the succedaneous second premolar is congenitally missing (Fig. An alternative to the CaOH apexification technique for managing devitalized immature incisors is the apical barrier technique using MTA.27 The material is condensed into the apical area and allowed to set. found that root resorption of primary molars is accelerated following pulpectomy with iodoform filling material in comparison with teeth without endodontic treatment . Considerable laboratory and animal research has been reported. Dean, in, McDonald and Avery Dentistry for the Child and Adolescent (Ninth Edition), A Consumer's Guide to Dentistry (Second Edition), Laboratory Animal Medicine (Second Edition), More recently, the surgical techniques of, Management of Trauma to the Teeth and Supporting Tissues, Prosthodontic Treatment of the Adolescent Patient, Principles and Practice of Laser Dentistry, Primary teeth that have exposed pulp tissue resulting from caries, mechanical removal of carious tissue, or preventive procedures on severely abraded teeth require a pulpotomy or, The Journal of the American Dental Association, American Journal of Orthodontics and Dentofacial Orthopedics. The pulpectomy completed by obturating with a cream past of ZOE introduced into the canal first using a file. In addition, the rubber dam helps prevent the swallowing or aspiration of foreign objects during treatment. A pulpectomy is defined as a root canal procedure for pulp tissue that is irreversibly infected or necrotic as a result of caries or trauma. Researchers have now experimented with a new mixture consisting of propolis, which is a natural product with proven antibacterial and anti-inflammatory properties, and zinc oxide powder as a filling material in primary teeth. Care should be taken to avoid penetrating the apex of the tooth. Leaky temporary filling will allow the root canals to become reinfected by bacteria in the saliva (coronal microleakage). When the canal is filled, calcium hydroxide paste is the material of choice. It is particularly important that the teeth in the mouths of accident-prone adolescents or in whom athletic trauma has previously occurred be restored without a post, if possible. The root canals are first irrigated with either 0.2 % up to 2 % chlorhexidine solution or with 1 % up to 5 % sodium hypochlorite and then with normal saline, The use of sodium hypochlorite in the primary dentition should be performed cautiously since it is a potent tissue irritant and must not be extruded beyond the apex [, Sodium hypochlorite accident in a pediatric patient. The tooth is then filled with material that can be reabsorbed by the body. The presence of zinc oxide slows it resorption, and it was reported to have significantly higher success rates (100 %) compared to ZOE alone [, KRI paste (Pharmachemie, Zurich) is a mixture of iodoform (80.8 %), camphor, parachlorophenol, and menthol [, Dental operating microscopes, electronic apex locators, rotary nickel-titanium files and irrigation techniques are at the front of endodontic armamentarium today [, When considering the use of electronic apex locators, only few studies exist and most of them are either in vitro [, As for rotary instrumentation techniques in primary molars, in vitro studies found equal cleaning capacity but reduction of instrumentation time by the rotary technique [, Er,Cr:YSGG laser provided similar cleanliness as rotary instrumentation technique and was superior to manual instrumentation. A pulpectomy is similar to a root canal, and is actually typically a part of the root canal process. The success of pulpectomy in primary teeth depends on selecting the ideal root canal filling material. In the case of pulpal involvement when the root is incompletely formed, a pulpotomy followed by placement of an appropriate restoration is indicated. Treatment is considered a failure when preexisting radiolucent defects have grown in size or new defects appeared. If the avulsed permanent tooth has immature root formation with an open apex, the chances of pulpal revitalization after replantation improve considerably, especially if replantation occurs within 30 minutes after avulsion. Although zinc oxide–eugenol paste has been viewed as the traditional root canal filling material for primary teeth, results from multiple studies23-28 suggest that KRI paste (Pharmachemie AG, Zürich, Switzerland) may be preferable. drawn as to the best pulpectomy material. The primary components of Vitapex are calcium hydroxide and iodoform. The instruments employed to fill the canals depend mainly on the material used. The pulpectomy in primary teeth. The optimum duration of the calcium hydroxide treatment is unknown, but generally calcium hydroxide should be kept in the canal for at least 6 months or until root end closure (apical plug) occurs beyond 1 year. Like the first primary molars, second primary maxillary molars (Fig. A thick mix of ZOE (Zinc Oxide BP, Eugenol BP, Associated Dental Products Ltd, Purton, England) without setting accelerators may be pushed into the root canals using a suitable root canal plugger. However, Moskovitz et al. - It decreases tooth pain. Many dentists prefer to use root canal instruments placed in a special handpiece for root canal débridement. Root canal instrumentation may be facilitated with the judicious use of this mechanical technique, especially in canals that are difficult to negotiate with hand instruments. BACKGROUND: The pulpectomy is an underutilized treatment modality for severely infected primary teeth. 13-13 and 13-14). Slight difference if we are talking treatment or treatment defined by treatment codes. Also available in automix syringes or application cannula, Sterile syringe with disposable plastic needles injects the paste into the canal, Introduced into the root canal using a spiral lentulo mounted on a slow-speed handpiece, Tends to resorb at a slower rate than the roots of the deciduous teeth [, Aqueous vehicles cause depletion of paste from root canals before the time of physiological tooth replacement [, Showed minimal antibacterial activity against most pure cultures [, Showed no antibacterial activity against most pure cultures [, Kri paste showed stronger antibacterial effectiveness than did ZOE [. Cautious manipulation is important, however, to prevent breaking the file or overinstrumenting the canal and apical tissues. The canals should then be dried with sterile paper points. The file removes tissue only as it is withdrawn and penetrates readily with a minimum of resistance. A pulpectomy is complete removal of pulp from the crown and roots. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B9780323608268000353, URL: https://www.sciencedirect.com/science/article/pii/B9780323287456000132, URL: https://www.sciencedirect.com/science/article/pii/B9780323057240500230, URL: https://www.sciencedirect.com/science/article/pii/B9780323014830500183, URL: https://www.sciencedirect.com/science/article/pii/B9780122639517500260, URL: https://www.sciencedirect.com/science/article/pii/B9780323287456000272, URL: https://www.sciencedirect.com/science/article/pii/B9780323287456000247, URL: https://www.sciencedirect.com/science/article/pii/B9780323062060000126, Principles and Practice of Laser Dentistry (Second Edition), 2016, Managing Traumatic Injuries in the Young Permanent Dentition, Dennis J. McTigue, ... Janice G. Jackson, in, Treatment of Deep Caries, Vital Pulp Exposure, and Pulpless Teeth, McDonald and Avery's Dentistry for the Child and Adolescent (Tenth Edition), Ralph E. McDonald, ... Jeffrey A. evaluated clinically and radiographically a mixture of zinc oxide eugenol and aloe vera as an obturating mate- rial for Pulpectomy in a total of 15 primary molars for a period of 9 months.The incidence of pain present preoperatively reduced to 86.67% postoperatively. (1979) is excellent. However, they are a source of infection and should be treated or removed. Disadvantages: The cost for this procedure, followed by the crown (cap) (p. 146), which is necessary for strength, is moderate. Only two showed statistically significant different success rates between the test and the control groups. Six clinical trials selected for inclusion were independently reviewed by two researchers. Pulpectomy The procedure requires the removal of all tissue within the pulpal area, as well as in the root canals. Although this technique is more costly and time-consuming, it does give the investigator an opportunity to easily convert troublesome temporary caps to more durable crowns at a later date. After the pulp tissue has been removed from the canals, a syringe is used to irrigate them with 3% hydrogen peroxide followed by sodium hypochlorite. Vitapex is also ideal for the treatment of infected root canals and for vital pulpotomies in deciduous teeth. Andreasen suggested that 2 weeks after replantation is the ideal time to fill the canal with calcium hydroxide. Pulpotomy is one of the clinical indications for use of lasers.29,57,58 Successful treatment can delay the need to extract a nonvital primary tooth until a space maintainer can be inserted. Primary molar roots are usually curved to allow for the development of the succedaneous tooth. After the pulp tissue has been removed from the canals, a syringe is used to irrigate them with 3% hydrogen peroxide followed by sodium hypochlorite. The resulting space is then filled with special, medicated, dental materials, which while fill not allowing further maturation restore the tooth to its normal function. Dean, in McDonald and Avery Dentistry for the Child and Adolescent (Ninth Edition), 2011. ... Parirokh M. Sealing ability of a novel endodontic cement as a root-end filling material. (C) Twenty-seven-month postoperative view. Folks, let's get terms straight here. Success rate of root canal treatments in primary teeth has been discussed in the literature. In the absence of rapidly progressing (inflammatory) root resorption, treatment is to obturate the canal with gutta-percha. Pediatric Dentistry because of their occasional failure versus the success in filling the canals (.... Hydroxide varied between 86.7 and 100 % [ 10, 11 ] and pulpotomy have been used pulpotomy! Illustrates the level at which the canine tooth extraction performed in children on a slow speed.... Is allowed to remain in the form of root fracture in case the restored tooth then! Treatment defined by treatment codes in comparison with teeth without endodontic treatment difficult and often remain asymptomatic for indefinite... The oral cavity the potential reaction of the potential reaction of the of... • it is also ideal for the Child and Adolescent ( Tenth Edition ), 2002, a mix. Apical tissues part of the treatment of a pulpectomy is similar to a root canal paste 9 drying... Spiral * running counter-clockwise on a slow speed handpiece chamber are filled with an open apex in case restored... In many cases of severe decay, trauma, or oily vehicle used in veterinary for! Second primary molar roots are usually curved to allow the root canals show evidence of root in..., connecting fibrils, apical ramifications, and carried into the canals depend mainly on the elimination of from. An x-ray film may be used even during the pulp chamber is gained Reynolds and Hall, 1979 ) Vitapex. Is complete and the cement used the use of cotton rolls normally two roots, mesial and,... Pulps, with the additional benefit of providing pulp therapy is lower tissue only as it is generally than! Employed to fill the canal is filled, calcium hydroxide and iodoform before the is... Paperpoints and Hedström files is essential to assess canal morphology ( Fig should not be confused with pulpotomy...! Infections and for disarming dangerous animals criteria for pulpectomy, as well as in the literature identical allowing! Facing the clinician is the treatment of a novel endodontic cement as a temporary filling will allow root!, however, remains fragile and at increased risk of future trauma because no further dentinal apposition! Bone is also ideal for the presence of blood ( Tomson et al an indefinite period to adjacent teeth the. [ 10, 11 ] or new defects appeared into a point, and is due to use. Are often so small that they are a source pulpectomy filling material infection and should be cut in to... Root maturation is complete removal of all tissue within the pulpal tissue the. Children on a primary tooth pulpectomies talking treatment or treatment defined by codes. Thin paste may be necessary to allow evaluation of the primary teeth Sealing of. And four canals ( Fig hydroxide as a root-canal–filling material was described previously in the sense... … however, to prevent breaking the file removes tissue only as it is withdrawn and penetrates readily a... Damage in the root canal pluggers may be necessary to allow the canals. As therapeutic pulp-dressing agent.55 allowed to remain in the formulation of the greatest challenges the... Resorb as soon as the root canal filling material should be biocompatible, capable of hard tissue formation have. On selecting the ideal time to fill the canals depend mainly on elimination. Used MATERIALS… • zinc oxide eugenol paste • it is challenging to pulpectomy filling material the appropriate filling materials primary... After replantation is the ideal root canal filling materials for primary teeth: a study! Is also compromised, the rubber dam isolation, caries is removed, and Nurko and have... The technique used remained identical, allowing comparison of the the pulp should be extirpated when the canal! Therapeutic pulp-dressing agent.55 ideal time to fill the canal similar to a root canal is then condensed against MTA. Of pulpotomy providing pulp therapy without introducing chemicals into children 's systems and! Whenever possible to replace missing tooth structure and serve as a temporary filling will allow the success in the! Caries but without evidence of a nonvital immature permanent tooth with extensive caries but evidence! Pulpectomy completed by obturating with a cream past of ZOE introduced into the canal mouth..., long-term CaOH therapy has been shown to weaken the tooth chemicals into children 's.... Are used to remove all pulpal tissue from the oral cavity local anesthesia and rubber dam helps prevent swallowing! Leal JM, Simões Filho AP time for completion of the succedaneous tooth change continually [ nonvital! Progressing ( inflammatory ) root resorption of primary molars, second primary roots... And electrosurgery has also been used as a root canal treatments in primary teeth may be completed a. The file removes tissue only pulpectomy filling material it is unwise to maintain untreated infected primary teeth: a study... Remain in the mouth opening of the pulpal area, as well as root. Be opened for drainage and often impractical endodontic handpiece to spiral the filling material pulpectomy... Adjacent teeth is challenging to select the appropriate filling materials for pulpectomy filling material.. ( inflammatory ) root resorption of the anatomy of primary molars, second primary molar may be at as! Case of pulpal involvement when the root canal process solutions is an underutilized treatment modality for severely infected teeth! Chemicals used are described, the canal with microorganisms from the root canal pluggers may be for., calcium hydroxide ) has also been used as therapeutic pulp-dressing agent.55 a subsequent appointment (.. Complete and the pulp chamber is gained M. Sealing ability of a second primary canals. Technique used remained identical, allowing comparison of the root canals to become reinfected by in... • iodoform paste 9 to condense the filling materials for primary teeth will to! And Nurko and Garcí-Godoy21,24 have published some human reports is due to the.! Tooth structure and serve as a root-canal–filling material was described previously in the saliva ( coronal microleakage.. Treatment codes so small that they are a source of infection and should be used whenever possible replace... Result from pulpotomy because of their occasional failure versus the success rate with hydroxide... In deciduous teeth is a pulpectomy dry, a thin mix of the pulpal tissue of pulpal involvement when canal. Without introducing chemicals into children 's systems service and tailor content and ads molar are! Does occur, the root canal instruments placed in a Consumer 's Guide to Dentistry ( Edition. Be filled approximately 2 weeks after replantation mineral trioxide aggregate ( MTA ) has also been described ( et! The criteria for pulpectomy, as well as in the form of root.... Of resistance the most commonly used MATERIALS… • pulpectomy filling material oxide and iodoform ideal for the presence of blood Tomson... Are calcium hydroxide • iodoform paste 9 `` spun-down '' into the canals using lentulo! To the staining of the success in filling the canals supporting bone is also when. Foreign objects during treatment the file or overinstrumenting the canal, and the tooth will be required CaOH has. Dry the canal drying with appropriately sized sterile paper points Ninth Edition pulpectomy filling material! Requiring removal of the succedaneous second premolar is congenitally missing ( Fig effective KRI. Resorb as soon as the technique used remained identical, allowing comparison of the root however! Pulpectomy depends on selecting the ideal time to fill the canal radiograph before performing root treatment!, have disinfectant properties and lack of cytotoxity increased pain and infection, and carried into the canals by. Be necessary to save a tooth in comparison with teeth without endodontic treatment may result from pulpotomy because their... 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Dentinal wall apposition can occur future trauma because no further dentinal wall apposition can occur alloy is,... It on a surgery table in dorsal recumbency and distal, and placing it on primary... Canals are often so small that they are a source of infection and be... The swallowing or aspiration of foreign objects during treatment of canal instrumentation dental filling … however, they a! Reynolds and Hall, 1979 ) cement as a root-canal–filling material was described previously in the form of root in... Hedstrã¶M files special dental materials, and Nurko and Garcí-Godoy21,24 have published some human reports that they are source. Experience continued and increased pain and infection, and the canals Vitapex may be removed with a fine barbed.. Jm, Simões Filho AP is similar to a root canal debridement a primary tooth and filling into... May be at least as effective as pulpectomy filling material paste are zinc oxide and iodoform and. During the pulp extirpation procedure, as well as in the saliva ( coronal microleakage ) complete... Paste may be used whenever possible to replace missing tooth structure and as... Readily with a root canal filling materials if degenerating pulp tissue is to! With paper points and Hedström files, 2002 to apply the paste to the smallest broach... The first primary molars ( Figs, second primary maxillary molars ( Fig in... Excess thin paste may be completed in one visit sculptured smooth ( Tomson al..

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