Restorations in abrasion/erosion cervical lesions: 8-year results of a triple blind randomized controlled trial. Clinical performance of conical and electroplated telescopic double crown-retained partial dentures: a randomized clinical study. Removable four implant-supported mandibular overdentures rigidly retained with telescopic crowns or milled bars: a 3-year prospective study. A prospective randomised clinical trial of one bis-GMA-based and two ormocer-based composite restorative systems in class II cavities: three-year results. Clinical performance of novel resin composites in posterior teeth: 18-month results. Effects of oral hygiene, residual caries and cervical Marginal-gaps on the survival of proximal atraumatic restorative treatment approach restorations A 3-year prospective clinical study of telescopic crown, bar, and locator attachments for removable four implant-supported maxillary overdentures. A clinical evaluation of two glass ionomer cements in primary molars using atraumatic restorative treatment technique in India: 1 year follow up. Clinical evaluation of atraumatic restorations in primary molars: a comparison between 2 glass ionomer cements. Retrospective clinical study of single-retainer cantilever anterior and posterior glass-ceramic resin-bonded fixed dental prostheses at a mean follow-up of 6 years. Clinical evaluation of polyacid-modified resin composite posterior restorations: one-year results. Clinical performance and marginal adaptation of class II direct and semidirect composite restorations over 3.5 years in vivo. A prospective randomized clinical trial of one bis-GMA-based and two ormocer-based composite restorative systems in class II cavities: Five-year results. Clinical evaluation of multiple-surface ART restorations: 12 month follow-up. Retention of microfilled and hybrid resin-based composite in noncarious Class 5 lesions: a double-blind, randomized clinical trial. Implant-supported mandibular overdentures retained with ball or telescopic crown attachments: a 3-year prospective study. The impact of rehabilitation using removable partial dentures and functionally orientated treatment on oral health-related quality of life: a randomised controlled clinical trial.
PURPOSE An equivalence r and omized controlled trial within the subject was organized to evaluate the clinical long-term success of a new 2-step etch & rinse adhesive and a new nano-filled ormocer . METHODS 50 subjects , 21 males and 29 females aged between 21 and 65 , were r and omized to receive 150 restorations , 100 with the new restorative material , 50 with the composite as control , placed in non-carious cervical lesions with the same bonding system . The main outcome measure was the cause of failure at 8 years . R and omization was number table-generated , with allocation concealment by opaque sequentially numbered sealed and stapled envelopes . Subjects , examiner , and analyst were blinded to group assignment . Two interim analyses were performed . Data were analyzed by ANOVA and Cox test ( P < 0.05 ) . RESULTS After 8 years , 40 subjects and 120 teeth were included in the analysis of the primary outcome . There were eight failures in the experimental group and four failures in the control group . The cumulative loss rate was 7 % for both restorative material s , with the annual failure lower than 1 % , without any statistically significant difference . There were two key elements of failure : the presence of sclerotic dentin and the relationship between lesion and gingival margin PURPOSE The aim of this study was to quantify and compare the clinical performance of cast conical double crown-retained removable partial dentures ( C-RPDs )  and electroplated double crown-retained removable partial dentures ( EP-RPDs ) . MATERIAL S AND METHODS A total of 60 RPDs were placed in 54 patients . Participants were r and omly assigned to two study groups ( C-RPD and EP-RPD ) . Altogether , 217 abutment teeth were provided with double crowns .  Patients were reexamined after 6 , 12 , 24 , and 36 months . The main endpoints were the survival times of RPDs and abutment teeth ; secondary endpoints included failure of the facing , loss of cementation of primary crowns , and postprosthetic endodontic treatment . Chi-square tests were used to evaluate group differences regarding characteristics of patients and RPDs . Survival differences were investigated using the log-rank test and Cox regression ; secondary endpoints were assessed using logistic regression . RESULTS After 36 months , survival was 100 % for C-RPDs and 93.3 % for EP-RPDs .  Cumulative survival for abutment teeth was 97.3 % ( C-RPDs ) and 96.2 % ( EP-RPDs ) . Survival differences between the two study groups did not reach statistical significance . The survival of abutments depended on tooth vitality and position ; for example , the hazard of tooth loss was 676 % higher for nonvital teeth . No differences were found between study groups regarding facing failure , decementation of primary crowns , or postprosthetic endodontic treatment . CONCLUSIONS Vitality and position are important to the survival of teeth supporting partial dentures . Longer follow-up and larger patient collectives are needed to evaluate possible differences between cast conical and electroplated telescopic double crown-retained partial dentures PURPOSE The present study evaluated implant survival/success rate , peri-implant parameters and prosthodontic maintenance efforts for four implant-supported m and ibular overdentures ( IOD ) rigidly retained on either milled bar or double crowns ( telescopic ) attachments . MATERIAL AND METHODS In a r and omized prospect i ve trial , 51 patients with edentulism received four m and ibular interforaminal implants and complete maxillary dentures .  For IOD , rigid denture stabilization was chosen r and omly selecting 26 patients for milled bars ( group I ) and 25 patients for double ( telescopic ) crowns ( group II ) . During a 3-year follow-up period , implant survival/success , peri-implant parameters ( marginal bone resorption , pocket depth , plaque- , bleeding- , gingival index [ BI and GI ] , calculus ) and prosthodontic maintenance efforts were evaluated and compared between both retention modalities used . RESULTS Forty-five patients ( 23 group I , 22 group II ) were available for a 3-year follow-up ( dropout rate : 11.8 % ) presenting a high implant survival/success rate ( 100 % ) . Peri-implant marginal bone resorption , pocket depth as well as BI and GI did not differ for both rigid retention modalities . However , annually higher values for plaque- ( NS ) and calculus index ( P<0.035 ) were noticed for the bar ( group I ) than for the telescopic crown ( group II ) attachments . Prevalence of prosthodontic maintenance did not differ between both retention modalities ( group I : 0.41/maintenance efforts/year/ patients vs. group II ; 0.45 maintenance/efforts/year/ patients ) . However , prosthodontic adaption for h and ling mechanism showed benefits for the bar retention . CONCLUSION Rigid anchoring of IOD retained either by bar or telescopic attachments showed high implant success rates and minor prosthodontic maintenance efforts regardless of retention modalities used . Stable denture retention presented healthy peri-implant structure for implants in bar and telescopic anchoring systems . Drawbacks such as higher plaque/calculus for bar retention and less favorable h and ling properties ( output ) for telescopic crown attachment leave the decision on the selection at the discretion of the clinician OBJECTIVES Ormocer composites , consisting of a silicon-based polymer , have been developed recently as a tooth-coloured restorative material . The purpose of this prospect i ve r and omised clinical trial was to evaluate the performance of two small-particle hybrid ormocer-based restorative systems ( AD , Admira/Admira Bond , VOCO ; DE , Definite/Etch & Prime 3.0 , Dentsply ) and one small-particle hybrid bis-GMA-based composite restorative system ( TC , Tetric-Ceram/Syntac , Ivoclar-Vivadent ) in occlusal stress-bearing restorations . METHODS One hundred and twenty-eight occlusal-proximal restorations ( 44 AD , 43 DE and 41 TC ) were placed according to the manufacturer 's instructions in thirty-two adult patients . Their clinical performance was scored according to the USPHS criteria and evaluation of bite-wing radiographs . RESULTS After 3 years , four AD , five DE and four TC restorations had failed due to fracture or marginal gap formation . Surface roughness improved significantly when compared to the baseline in AD and TC ( Friedman test , p<0.05 ) during the first year but returned to baseline values after 3 years . DE had a significant tendency towards discolouration ( p<0.05 ) . Bite-wing radiographs showed two AD and one TC restorations with internal porosities . ANOVA showed that larger restorations ( > or = 3 surfaces ) showed significantly more degradation than smaller ones . CONCLUSIONS In a group of class II restorations , there was no significant difference in failures after 3 years between ormocer-based and bis-GMA-based restorative systems PURPOSE The aim of this study was to evaluate the clinical success potential of two nanocomposites placed in posterior teeth using an antibacterial adhesive system over 18 months . METHODS A total of 49 Class I and 47 Class II restorations were placed in the permanent teeth of thirty adult patients . The carious lesions were restored with Gr and io ( Voco ) or Filtek Supreme ( 3 M ESPE ) using a two-step self-etching antibacterial adhesive system Clearfil Protect Bond ( Kuraray ) . The restorations were finished with fine-grit diamond burs , Enhance polishing system , and Sof-Lex finishing brushes . The restorations were evaluated at baseline , 6 , 12 , and 18 months after placement using modified Ryge criteria for color stability , marginal discoloration , marginal adaptation , caries formation , anatomic form , postoperative sensitivity , surface roughness , and retention . RESULTS The changes in the parameters were assessed using the Cochran Q test and the McNemar test at a significance level of p < 0.05 . All restorations were classified as clinical ly satisfactory after 18 months . Statistical analysis demonstrated differences only in superficial roughness , with Gr and io exhibiting more surface roughness than Filtek Supreme ( p < 0.05 ) . CONCLUSION Posterior restorations built up with the novel nanocomposites using an antibacterial self-etching system showed satisfactory results at the 18-month recall appointment relative to all criteria except the surface texture in the case of Gr and io . Further evaluations are necessary for a more in-depth analysis Background : Although Atraumatic restorative treatment ( ART ) approach has been in existence for a while , the reasons for the poor performance of multisurface ART restorations are not very clear . Aim : The aim of this study is to investigate the effects of oral hygiene , residual caries and cervical marginal-gaps on survival of proximal ART restorations . Setting s : Two rural divisions in Kenya were selected for the study . Design : A r and omized clinical trial . Material and Methods : The 804 children in the study had their baseline- and 2-year dental plaque levels documented . Each child received one proximal restoration in a primary molar using ART approach , together with trained and pre-tested operators/assistants , three glass ionomer cements (GIC)-br and s and two tooth-isolation methods . The restorations were clinical ly evaluated soon after placement and after 2 years . Post-restorative bite-wing radiographs taken soon after restoration were also evaluated . Statistical analysis : Statistical Package for Social Sciences ( SPSS ) version 14 computer programme was used and results tested using Pearson 's correlation , Cox Proportional Hazards regression analysis and Multiple Logistic regression models tests . Results : At baseline and after 2 years , the mean cumulative survival and plaque index changed from 94.4 % to 30.8 % and 2.34 ( St and ard Deviation , or SD of 0.46 ) to 1.92 ( SD 2.1 ) respectively , with higher plaque indices associated with higher restoration failures . Of the 507 radiographs evaluated , 48 ( 9.5 % ) , 63 ( 12.4 % ) and 9 ( 1.8 % ) restorations had residual caries ( RC ) , cervical marginal-gaps ( CMG ) and both RC/CMG respectively . Survival of the restorations with RC/CMG was significantly lower ( p = 0.003 ) compared to those with RC or without RC . Conclusion : Low survival of proximal restorations in the study was associated with the presence of cervical marginal-gaps PURPOSE To evaluate telescopic crown ( TC ) , bar , and locator attachments used in removable four implant-supported overdentures for patients with edentulous maxillae . MATERIAL S AND METHODS A total of 30 maxillary edentulous patients were enrolled in a 3-year prospect i ve study . Ten patients ( group A ) were treated with overdentures supported by TCs , 10 patients ( group B ) with overdentures supported by bar attachments , and 10 patients ( group C ) with overdentures supported by locator attachments . A total of 120 implants were used to restore oral function . During the 3-year follow-up period , implant survival and success rates , biologic and mechanical complications , prosthodontic maintenance efforts , and patient satisfaction were evaluated . RESULTS All 30 patients were available for the 3-year follow-up and exhibited 100 % implant survival and success rates . Peri-implant marginal bone resorption was not statistically significant for the three groups . There were lower plaque , bleeding , gingiva , and calculus indices in group C compared with groups A and B. The number of prosthodontic maintenance visits revealed eight complications in the TC group , seven complications in the bar group , and four complications in the locator group . However , there were no differences in the clinical effects of the overdentures in the three groups . CONCLUSION Within the limits of this prospect i ve study , it was concluded that the locator system produced superior clinical results compared with the TC and bar attachments in terms of peri-implant hygiene parameters , the frequency of prosthodontic maintenance measures , cost , and ease of denture preparation . However , longer-term prospect i ve studies are required to confirm these results AIM To compare the clinical performance of two glass ionomer cements , Amalgomer CR and Fuji IX in small and medium cavities prepared using Atraumatic restorative treatment approach in India . STUDY DESIGN One hundred school children in the age group of 4 - 9 years who had bilateral matched pair of carious lesions in primary posterior teeth were included . A split mouth design was used in which two material s were r and omly placed in contralateral sides . The performance of the restorations was assessed after 1 year using Frenken 's criteria ( 1996 ) . Survival analysis of restoration was done using chi-square test . RESULTS The survival rate of Amalgomer CR and Fuji IX class I restorations were 97.4 % and 94.9 % , respectively . In class II cavities 95.1 % and 88.5 % of Amalgomer CR and Fuji IX restorations were successful . Amalgomer CR and Fuji IX showed a success of 94.2 % and 92.3 % in small sized class II cavities . Amalgomer CR showed a 100 % success for medium sized class I and II restorations . Whereas Fuji IX showed a 100 % and 66.7 % success in medium sized class I and II cavities . CONCLUSION The clinical performances of both material s were satisfactory at the end of 1 year and ART is suitable procedure to be done in a dental clinic for children Dental caries continues to be a highly prevalent disease among Brazilian preschoolers , especially those with low socioeconomic status . The purpose of this r and omized , controlled trial was to evaluate in vivo 245 simplified  restorations  in deciduous molars using glass ionomer cements ( Vidrion R and Ketac-Molar ) . Dental restorations were evaluated at 6- and 12-month follow-ups . The teeth restored with Vidrion R ( SS White ) on a single tooth surface were successful in 87 % of the cases evaluated at 6 months and in 63 % at 12 months . The teeth restored with Ketac-Molar on one surface achieved a success rate of 95 % at 6 months and 82 % at 12 months . No recurrent caries or pulpal infection was evident . Logistic regression analysis demonstrated that teeth with cavities restricted to the occlusal surface on sclerotic dentin showed the best adhesion to the restorative material . The restorations with Ketac-Molar had a better clinical performance than those with Vidrion PURPOSE To retrospectively evaluate the 6-year survival rates and technical/ biologic complication rates of single-retainer glass-ceramic resin-bonded fixed dental prostheses ( RBFDPs ) .  MATERIAL S AND METHODS Forty patients with 49 anterior/posterior glass-ceramic RBFDPs were included . The RBFDPs  replaced 11 maxillary/m and ibular central incisors , 18 lateral incisors , 18 premolars , and 2 molars . Patients willing to participate were clinical ly and radiologically examined . The technical outcome was assessed with modified United States Public Health Service criteria . Fracture and /or chipping of the restoration , occlusal wear , marginal adaptation , marginal discoloration , shape , surface texture , and esthetic integration were recorded . Tooth vitality and postoperative sensitivity were tested . The following biologic parameters were assessed at test and control teeth : probing pocket depth , gingival recession , attachment loss , bleeding on probing , furcation involvement , and periodontal mobility . Statistical analysis was performed with exact 95 % confidence intervals to relative frequencies and the paired t test . RESULTS Twenty-eight patients with 35 RBFDPs participated . The mean follow-up of the RBFDPs was 6 years . Twelve patients with 14 RBFDPs were not willing to participate or not available . No catastrophic failures occurred . The 6-year survival rate of the examined RBFDPs was 100 % . No debonding was recorded . Chipping of the ceramic was found in 5.7 % of the RBFDPs . Biologic outcomes were similar at test and control teeth . CONCLUSION Glass-ceramic RBFDPs exhibited promising clinical outcomes in both anterior and posterior regions OBJECTIVE The aim of this investigation was to evaluate the clinical performance of a new compomer restorative system , Dyract AP , placed in combination with Non-Rinse Conditioner and Prime & Bond NT in permanent posterior teeth . METHOD AND MATERIAL S Fifty Class II and 41 Class I restorations were placed in 39 patients by 1 dentist . The restorations were evaluated directly , with modified US Public Health Service criteria , and indirectly , with color slides and polyvinyl siloxane impressions , at baseline and 6 months and 1 year after placement . Preoperative and 1-year postoperative bitewing radiographs were also taken . RESULTS All 82 restorations available for 1-year evaluation were in situ . No postoperative sensitivity or pulpal problems were reported . Four Class II restorations ( 4.9 % ) failed because of partial fracture or recurrent caries . The percentages of Alfa score for each criterion were color match , 95.1 % ; marginal discoloration , 57.3 % ; marginal integrity , 35.4 % ; anatomic form , 98.8 % ; and surface texture , 91.5 % . The average wear rate of Dyract AP was low ( 18.5 + /- 11.7 microns at 6 months and 35.7 + /- 13.6 microns at 12 months ) . CONCLUSION The excellent h and ling characteristics , the good clinical performance , and the improved wear resistance suggest that this compomer will provide reliable direct tooth-colored restorations in stress-bearing areas OBJECTIVE The study evaluated the clinical performance and marginal adaptation of  direct and semi-direct class II composite restorations  in a split-mouth design over 3.5 years . DESIGN 44 upper posterior teeth in 11 adults with primary carious lesions were treated with 22  direct and 22  semi-direct restorations . Conventional cavities were prepared for both types of restorations . A fine fine hybrid composite ( APH ) and a multifunctional adhesive system ( Prisma universal bond 3 ) were used for all restorations . The incremental " 3-sited light curing " technique was applied to direct restorations . Semi-direct inlays were prefabricated on silicone casts and post-cured using light and heat .  Clinical performance was evaluated using modified USPHS parameters , while marginal adaptation was judged on replicas , using SEM and a st and ardized evaluation technique . RESULTS Clinical results after 3.5 years revealed a 100 % retention rate with no fractures , sensitivity or recurrent caries for both types of restorations . SEM-evaluation of the occlusal margins showed at the tooth-restoration interface relatively low rates of marginal openings over the observation period ( 4 - 8 % ) . Marginal restoration fractures ranged between 1 and 2 % , marginal tooth fractures between 3 and 9 % . Differences between the restorative techniques and after the different time observation periods were not statistically significant . Proportions of marginal fractures and openings at the restoration-luting composite interface were less than 10 % after 3.5 years . CONCLUSION The results indicated no significant differences for direct and semi-direct fine hybrid composite restorations  in medium size cavities in posterior teeth with respect to clinical performance and marginal adaptation over 3.5 years OBJECTIVES Ormocer composites , consisting of a silicon-based polymer , have been developed recently as a tooth-colored restorative material . The purpose of this prospect i ve r and omized clinical trial was to evaluate the performance of two small-particle hybrid ormocer-based restorative systems ( AD , Admira/Admira Bond , VOCO ; DE , Definite/Etch & Prime 3.0 , Dentsply ) and one small-particle hybrid bis-GMA-based composite restorative system ( TC , Tetric-Ceram/Syntac , Ivoclar-Vivadent ) in class II cavities . METHODS From 128 occlusal-proximal restorations ( 44 AD , 43 DE and 41 TC ) placed in 32 adult patients , eventually 77 ( 22 AD , 29 DE and 26 TC ) remained available for evaluation after 5 years . Their clinical performance was scored according to the USPHS criteria and evaluation of bite-wing radiographs . RESULTS After 5 years , eight AD , six DE and seven TC restorations had failed ( p=0.10 , log-rank test ) . The main reason was fracture or marginal gap formation , while secondary caries accounted for four failures . In all restorations the quality of surface , margins and contact point decreased significantly compared to baseline . DE had a significant poorer color match ( p<0.01 ) . Statistical evaluation using the KW test showed that failures were concentrated on specific patients . CONCLUSIONS In a group of class II restorations , there was no significant difference in failures after 5 years between ormocer-based and bis-GMA-based restorative systems PURPOSE The purpose of this study was to evaluate the performance of multiple-surface restorations employing 2 different glass ionomer cements ( GICs ) and the Atraumatic Restorative Treatment ( ART ) approach in permanent molar teeth . METHODS This study examined 60 restorations--36 Class I restorations involving 2 or more tooth surfaces and 24 Class II restorations -- that were placed in 46 schoolchildren ( 9 - 16 years of age ) by 2 dentists using the ART approach . The restorations were r and omly divided into 2 groups : ( a ) 30 cavities were filled with high strength GIC ( Ketac Molar-3 M ESPE ) , and ( b ) 30 cavities were filled with resin-modified GIC ( Fuji VIII-GC Corp ) . Two independent calibrated examiners carried out the evaluations according to ART criteria . The interexaminer kappa was 0.92 . Data were su bmi tted to chi-square , McNemar , and Fisher 's tests . A difference was statistically significant if P<.05 . RESULTS In a 12-month follow-up , 59 restorations were evaluated . The success rates of the restorations were 100 % and 93 % for Fuji VIII and Ketac Molar , respectively . There was no statistically significant difference between GICs , cavity types , or operators . CONCLUSIONS Based on a 12-month follow-up evaluation , the clinical performance of the multiple-surface atraumatic restorative treatment restorations of both glass ionomer cements ( high-strength and resin-modified ) was considered satisfactory with a high success rate This double-blind clinical trial was undertaken to compare the retention rate of restorative material s with contrasting stiffness in noncarious class 5 lesions . All restorations were placed using retraction cord and cotton roll isolation to more closely mimic the general practice setting . Thirty subjects with at least two lesions were recruited to participate in the study . Each subject received one restoration using Silux Plus and one using Z100 . The assignment of material was r and omized , and the subjects were unaware of which tooth had received which material . All restorations were placed with a fourth-generation adhesive liner , Scotchbond Multi- Purpose . Evaluations were performed at baseline , 6 , and 12 months by two independent examiners unaware of the restoration 's group identity . The restorations were evaluated using criteria developed by Cvar and Ryge in a forced-consensus model . Despite the fact that the two material s have widely different elastic modulus values , after 12 months no difference between the retention rates for the two groups was found , and both groups of restorations performed very well PURPOSE The aim of the present study was to evaluate implant survival , peri-implant conditions , and prosthodontic maintenance requirements for implant-supported m and ibular overdentures in atrophic m and ibles retained with ball or resilient telescopic crown attachments during a 3-year period . MATERIAL S AND METHODS Twenty-five patients with edentulous m and ibles each received 2 Camlog root-form dental implants in the m and ibular interforaminal ( canine ) region . The denture attachment system was chosen r and omly ; 13 patients received ball attachments and 12 patients received resilient telescopic crowns .  Implant survival , implant mobility ( Periotest values ) , and peri-implant conditions such as bone resorption , pocket depth , Plaque Index , Gingiva Index , Bleeding Index , and Calculus Index values were assessed for each implant . In addition , detailed prosthodontic maintenance was evaluated during the follow-up period and the 2 retention modalities were compared . RESULTS There were no differences in implant survival , implant mobility ( Periotest values ) , and peri-implant conditions between the 2 retention modalities . During the 3-year period significantly more complications/ interventions for maintenance purpose s were registered in the ball group ( 62 interventions ) than in the telescopic crown group ( 26 interventions ; P < .01 ) . CONCLUSION The results indicate that both ball attachments and resilient telescopic crowns used on isolated implants in the edentulous m and ible are viable treatment options . Implant success and peri-implant conditions did not differ between ball attachments and telescopic crowns used as retention modalities for implant overdentures , but the frequency of technical complications was significantly higher with ball attachments than with resilient telescopic crowns OBJECTIVES This study aim ed to compare two different tooth replacement strategies for partially dentate older patients ; namely functionally orientated treatment according to the principles of the shortened dental arch ( SDA ) and conventional treatment using removable partial dentures ( RPDs ) using a r and omised controlled clinical trial . The primary outcome measure for this study was impact on oral health-related quality of life ( OHRQoL ) measured using the short form of the oral health impact profile ( OHIP-14 ) . METHODS Patients aged 65 years and older were r and omly allocated to two different treatment groups : the RPD group and the SDA group . For the RPD group each patient was restored to complete arches with cobalt-chromium RPDs used to replace missing teeth . For the SDA group , patients were restored to a premolar occlusion of 10 occluding pairs of natural and replacement teeth using resin bonded bridgework ( RBB ) .  OHRQoL was measured using the OHIP-14 question naire administered at baseline , 1 month , 6 months and 12 months after treatment intervention . RESULTS In total , 89 patients completed the RCT : 44 from the RPD group and 45 from the SDA group . Analysis using a mixed model of covariance ( ANCOVA ) illustrated that treatment according to the SDA concept result ed in significantly better mean OHIP-14 scores compared with RPD treatment ( p<0.05 ) . This result was replicated in both treatment centres used in the study . CONCLUSIONS In terms of impact on OHRQoL , treatment based on the SDA concept achieved significantly better results than that based on RPDs 12 months after treatment intervention ( trial registration no. IS RCT N26302774 ) . CLINICAL SIGNIFICANCE Functionally orientated treatment delivery result ed in significantly better outcomes compared to removable dentures in terms of impact on
Failures of fiber posts were mainly due to post loss of retention , while metal post failures were mostly related to root fracture , post fracture and crown and /or post loss of retention .
In conclusion , metal and fiber posts present similar clinical behavior at short to medium term follow-up .
Remaining dental structure and ferrule increase the survival of restored pulpless teeth .
The aim of this systematic review was to compare the clinical performance and failure modes of teeth restored with intra-radicular retainers .