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| 2. |
- Andreasen, F M, et al.
(författare)
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Long-term survival of fragment bonding in the treatment of fractured crowns: a multicenter clinical study.
- 1995
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Ingår i: Quintessence international (Berlin, Germany : 1985). - 0033-6572. ; 26:10, s. 669-81
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Tidskriftsartikel (refereegranskat)abstract
- In three Scandinavian dental facilities, a series of 334 permanent incisors with fractures of the crown or crown and root was treated by reattachment of the fragment with a resin composite. Two centers (Oslo and Stockholm) employed acid etching of enamel alone for fragment bonding (n = 146), while the third center (Copenhagen) used a combination of enamel etching and dentinal bonding (n = 188). Although the final retention rate of fragment bonding was similar in the two groups, it took the dentinal bonding group almost three times as long to drop to 50% fragment retention. This difference could be attributed to greater bonding strength in the dentinal bonding group, greater risk of second injury in the younger acid-etching group, or difficulty in maintaining a dry operative field in the younger age group. The good fragment retention, acceptable esthetics, and pulpal vitality observed in the present series indicate that reattachment of the coronal fragment is a realistic alternative to placement of conventional resin-composite restorations.
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| 3. |
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| 4. |
- Chrcanovic, Bruno, et al.
(författare)
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Bisphosphonates and dental implants : A meta-analysis
- 2016
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Ingår i: Quintessence International. - : Quintessence. - 0033-6572. ; 47:4, s. 329-42
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To test the null hypothesis of no difference in the implant failure rates, marginal bone loss, and postoperative infection for patients receiving or not receiving bisphosphonates, against the alternative hypothesis of a difference. METHOD AND MATERIALS: An electronic search was undertaken in October 2015 in PubMed/Medline, Web of Science, and Embase, plus hand-searching and databases of clinical trials. Eligibility criteria included clinical human studies, either randomized or not. RESULTS: A total of 18 publications were included in the review. Concerning implant failure, the meta-analysis found a risk ratio of 1.73 (95% confidence interval [CI] 1.21-2.48, P = .003) for patients taking bisphosphonates, when compared to patients not taking the medicament. The probability of an implant failure in patients taking bisphosphonates was estimated to be 1.5% (0.015, 95% CI 0.006- 0.023, standard error [SE] 0.004, P < .001). It cannot be suggested that bisphosphonates may affect the marginal bone loss of dental implants, due to a limited number of studies reporting this outcome. Due to a lack of sufficient information, meta-analysis for the outcome "postoperative infection" was not performed. CONCLUSION: The results of the present study cannot suggest that the insertion of dental implants in patients taking BPs affects the implant failure rates, due to a limited number of published studies, all characterized by a low level of specificity, and most of them dealing with a limited number of cases without a proper control group. Therefore, the real effect of BPs on the osseointegration and survival of dental implants is still not well established.
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| 5. |
- Chrcanovic, Bruno, et al.
(författare)
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Immediate implant placement in the posterior mandible : A cone beam computed tomography study
- 2016
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Ingår i: Quintessence International. - : Quintessence. - 0033-6572. ; 47:6, s. 505-514
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To determine the longest upright and tilted implant that can be placed in posterior mandibular teeth (second premolars [2PM], first molars [1M], and second molars [2M]) in case of immediate implant placement (IIP), respecting a safe distance from the inferior alveolar canal (IAC) and the submandibular fossa, using cone beam computed tomography (CBCT) scans. Method and Materials: In CBCT scans of 118 subjects, the following were measured: distance from the tooth apex to the IAC (DTC), lateromedial width of the mandible, classification of mandibular cross-sectional morphology, upright and tilted implant placement simulation, tilting angle that allowed placement of the longest implant. Results: The DTC has shown to be greater for 1M, shorter for 2PM, and even shorter for 2M. Between 70% and 88% of all 2PM, 1M, and 2M present less than 6 mm of DTC. The cross-sectional morphology of the mandible had a tendency to be classified as "undercut" in more posterior regions. For both 4.0- and 5.0-mm implants, more posterior regions resulted in a greater difference in length between the upright and tilted implants. The tilting angle was greater for the more posterior regions. Most of the relationships between age/sex and the morphometric parameters were weak. Conclusion: Lingual concavity is a common clinical finding at the posterior mandibular region, and its occurrence varies according to the tooth type. The great majority of the 2PM, 1M, and 2M present limited available bone between the root apex and the IAC, which stresses the need for careful attention when IIP is planned in this area.
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| 8. |
- Haag, Per, et al.
(författare)
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Questions and answers on titanium-ceramic dental restorative systems : a literature study
- 2007
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Ingår i: Quintessence International. - : Quintessence. - 0033-6572. ; 38:1, s. e5-e13
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Forskningsöversikt (övrigt vetenskapligt/konstnärligt)abstract
- OBJECTIVE: Titanium ceramics has become a topic of interest for prosthetic applications, thanks to the documented biocompatibility of commercially pure titanium. A number of concepts have been presented, including metal frameworks produced by casting or milling and a number of materials and methods for veneering. However, the concept has not reached a clinical breakthrough since failures have been reported from clinical experiences. METHOD AND MATERIALS: A PubMed search on the following key words was performed: titanium ceramics, long-term results. RESULTS: This review illustrates the fact that it is possible to have success with titanium ceramics on crucial criteria: fit and marginal adaptation, bond strength between metal and ceramics, and esthetic outcome. A review of clinical studies indicates a tendency for success rates to increase with time, which must be explained as a normal learning curve for a technical concept. The learning curve also includes development of materials and methods and the fact that there is a certain amount of technique sensitivity involved in the success rate for titanium ceramics. CONCLUSIONS: There is reason to believe that the outstanding clinical properties of titanium will further catalyze the development of titanium ceramics, and recent experiences clearly indicate that titanium ceramics, being a clinical product ready for use in fixed partial dentures, might already today challenge standard metal ceramics.
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| 9. |
- Kloukos, Dimitrios, et al.
(författare)
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Transgingival probing : a clinical gold standard for assessing gingival thickness
- 2021
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Ingår i: Quintessence International. - : Quintessence. - 0033-6572. ; 52:5, s. 394-401
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Tidskriftsartikel (refereegranskat)abstract
- Objective: Transgingival probing is often used in the clinic to assess gingival thickness. However, what is not completely known is how well this method represents the true value of soft tissue thickness. The aim of this study was to assess differences and variation in gingival thickness when measured with trans-gingival probing or scanned with an intraoral device. Method and materials: This ex vivo study evaluated gingival thickness on 20 porcine cadavers. Gingival thickness was assessed at both central and lateral mandibular incisors through transgingival probing with a standard metal periodontal probe and also using intraoral scanning, which was considered as the method providing the 'true value' of soft tissue thickness. Intra-examiner repeatability and method error were evaluated. Results: No evidence of systematic difference for any of the mandibular central or lateral incisors (mandibular right incisors: mean difference -0.17 to -0.01 mm, and mandibular left incisors: mean difference -0.11 to 0.04 mm) was observed between the periodontal probe and intraoral scanning methods. The absolute differences between the repeated measurements with intraoral scanning for each tooth type (n = 30) were calculated: the overall median was 0.089 mm and the interquartile range was 0.080 mm. Conclusions: Transgingival probing with a standard metal periodontal probe for assessing gingival thickness is a reliable method, with values very close to the true gingival thickness, and it can thus be considered as the clinical gold standard.
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| 10. |
- Lippert, V. F., et al.
(författare)
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Complete oral rehabilitation with direct and indirect composite resins: a minimally invasive approach on severely compromised teeth
- 2022
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Ingår i: Quintessence International. - 0033-6572. ; 53:10, s. 824-831
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Tidskriftsartikel (refereegranskat)abstract
- The rehabilitation of severely worn teeth is a complex challenge for dental practitioners. There are many different types of dental materials and restorative techniques, and there is not a single way to achieve the desired result. This clinical report demonstrates a complete oral rehabilitation with composite resins when using an indirect application and direct techniques, with the support of the Lucia Jig technique, the Willis technique, and diagnostic waxing for the vertical dimension correction. The wide clinical improvement was achieved with the recovery of the function, the esthetics, and the increase of vertical dimension of occlusion through the planned treatment. The proposed treatment main tained the natural teeth, without the intense wear by the appli-cation of the composite resins instead of ceramics, together with excellent conditions for the patient to control the posttreatment and extend the durability, with the correct follow-up of appoint-ments. Young patients with extensive dental wear and the loss of vertical dimension should not be directly submitted to ceramic treatments, with preparations for full crowns. Oral rehabilitation using composite resins, either directly or indirectly, allows for the recovery of the function and esthetics, without the intense pre-dictable dental wear, and reduced financial investment.
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