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Cortez TV, Godoy EP, Paschoini VL, Corona SAM, Borsatto MC, Souza-Gabriel AE. Clinical performance of sealants under different humidity control conditions: a split-mouth 1-year randomized trial. Eur Arch Paediatr Dent 2023; 24:769-777. [PMID: 37749313 DOI: 10.1007/s40368-023-00843-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 09/02/2023] [Indexed: 09/27/2023]
Abstract
PURPOSE Sealants are an effective method of prevention and treatment for early caries lesions. This study analyzed the 1-year clinical performance of resin-based and ionomeric sealants applied to permanent teeth under different humidity conditions. METHODS The investigation was a triple-blind randomized clinical trial (RCT) with a four arms split-mouth design, divided according to the sealant protocol: (1) Resin-based sealant applied with rubber dam isolation, (2) Resin-based sealant applied with cotton rolls isolation, (3) Ionomeric sealant applied with rubber dam isolation and (4) Ionomeric sealant applied with cotton rolls isolation. Fifty-eight patients started the study (232 teeth), and 47 (188 teeth) remained until the 1-year recall. The modified USPHS criteria were used in the analyzes to investigate surface texture, retention and the presence of secondary caries lesions around the sealants; in the following periods: baseline, after 3, 6, 9, and 12 months by two calibrated examiners. Data were analyzed by the Mann-Whitney and Friedman tests. RESULTS There was no difference between the types of sealants (p > 0.05). The type of humidity control influenced the superficial texture (p = 0.0012) and the retention of sealants (p = 0.0023). The sealant displacement was greater under cotton rolls isolation. Only one active caries lesion in enamel was found in the 9th month. CONCLUSION It may be concluded that sealants effectively prevented caries, even when they were partially or totally lost, regardless of the material. The rubber dam isolation with a rubber dam promoted lower surface roughness and improved the retention rates. International Clinical Trials Registry Platform: #1111-1215-2832 (07/26/2018).
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Affiliation(s)
- T V Cortez
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo - Café Av,, Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - E P Godoy
- Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo - Café Av, Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - V L Paschoini
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo - Café Av,, Ribeirão Preto, São Paulo, 14040-904, Brazil.
| | - S A M Corona
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo - Café Av,, Ribeirão Preto, São Paulo, 14040-904, Brazil
| | - M C Borsatto
- School of Dentistry of Ribeirão Preto, Department of Pediatric Dentistry, University de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - A E Souza-Gabriel
- Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo - Café Av,, Ribeirão Preto, São Paulo, 14040-904, Brazil
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Nakajima Y, Botticelli D, De Rossi EF, Ferreira Balan V, Pires Godoy E, Ricardo Silva E, Xavier SP. Schneiderian Membrane Collateral Damage Caused by Collagenated and Non-Collagenated Xenografts: A Histological Study in Rabbits. Dent J (Basel) 2023; 11:dj11020031. [PMID: 36826176 PMCID: PMC9955563 DOI: 10.3390/dj11020031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/12/2023] [Accepted: 01/16/2023] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND The Schneiderian membrane (SM) that is in contact with biomaterial granules may become thinner and eventually perforate. It has been shown that these events are related to the biomaterial used. Hence, the main aim of the present study was to compare the damaging effects of two xenografts with different resorbability rates on SM. The secondary aim was to evaluate the possible protection from damage offered by a collagen membrane placed adjacent to the SM and by inward displacement of the bone window with the SM during elevation. METHODS Thirty-six albino New Zealand rabbits underwent bilateral sinus elevation. One group of 18 animals received deproteinized bovine bone mineral (DBBM group) and the other received swine-collagenated corticocancellous bone (collagenated group). Moreover, in the DBBM group, the bone window was displaced inward during elevation in one sinus together with the SM. In the collagenated group, a collagen membrane was placed adjacent to the SM in one sinus. Six animals were assessed per period after 2, 4, and 8 weeks. RESULTS The mean pristine mucosa width ranged between 67 µm and 113 µm, and none had a width of <40 µm. In the 2-week group, the elevated mucosa of the DBBM group presented 59 thinned sites and five perforations, while in the collagenated group, 14 thinned sites and one perforation were observed. Damage to SM decreased in number in the 4-week treatment group. In the 8-week group, the number of thinned sites in the DBBM group increased to 124, and the perforations to 8. In the collagenated group, 7 thinned sites and 1 small perforation were observed. CONCLUSIONS More damage to the Schneiderian membrane was observed in the DBBM group than in the collagenated group. The presence of the inward bone window offered protection from damage to the Schneiderian membrane.
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Affiliation(s)
- Yasushi Nakajima
- Department of Oral Implantology, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata 573-1121, Osaka, Japan
- ARDEC Academy, 47923 Rimini, Italy
| | | | | | - Vitor Ferreira Balan
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, Brazil
| | - Eduardo Pires Godoy
- Department of Oral Biology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo 05508-060, Brazil
| | - Erick Ricardo Silva
- ARDEC Academy, 47923 Rimini, Italy
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, Brazil
| | - Samuel Porfirio Xavier
- ARDEC Academy, 47923 Rimini, Italy
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, Brazil
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Omori Y, Botticelli D, Migani S, Ferreira Balan V, Pires Godoy E, Xavier SP. Sinus Mucosal Damage Triggered by Synthetic or Xenogeneic Bone Substitutes: A Histological Analysis in Rabbits. J Funct Biomater 2022; 13:jfb13040257. [PMID: 36412898 PMCID: PMC9680494 DOI: 10.3390/jfb13040257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/11/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022] Open
Abstract
Background: It has been shown in rabbit models that the sinus mucosa in contact with graft particles might experience a progressive thinning and perforations. The phenomenon depends on the graft used. Hence, the aim of the present study was to compare the damaging effects of a synthetic of a xenogeneic graft. Methods: Forty New Zealand rabbits received a bilateral sinus elevation. Both sinuses of twenty rabbits were grafted with a biphasic 60% hydroxyapatite and 40% β-tricalcium phosphate while the other twenty received a deproteinized bovine bone mineral graft. Thinned sites (<40 µm) and perforations on the mucosa in contact with graft particles were evaluated after 2 and 10 weeks (ten animals each period). The width of the pseudostratified epithelium was also measured as control. Results: After 2 weeks of healing, 61 thinned sites were detected in the Synthetic group and 49 in the Xenogeneic group. After 10 weeks, the number of thinned mucosae increased to 79 sites in the Synthetic group (p = 0.222 between periods), and to 114 sites in the Xenogeneic group (p = 0.030 between groups; p = 0.001 between periods). Perforations were few in the 2-week period, two in two sinuses out of 20 in the Synthetic group, and four in two sinuses out of 20 in the Xenogeneic group (p = 0.721). In the 10-week period, the perforations increased to eight in the Synthetic group, distributed in six sinuses out of 20, and to sixteen in the Xenogeneic group, distributed in 11 sinuses out of 20 (p = 0.082). The pseudostratified epithelium presented a reduced width at the thinned sites. Conclusions: The contact with synthetic or xenogeneic grafts will induce thinning and possible perforations of the sinus mucosa. This effect will increase over time, and it is stronger at the xenogeneic than the synthetic graft.
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Affiliation(s)
- Yuki Omori
- Department of Oral Implantology, Osaka Dental University, 8-1 Kuzuhahanazonocho, Osaka 573-1121, Japan
| | - Daniele Botticelli
- ARDEC Academy, Viale Giovanni Pascoli 67, 47923 Rimini, Italy
- Correspondence:
| | - Stefano Migani
- ARDEC Academy, Viale Giovanni Pascoli 67, 47923 Rimini, Italy
| | - Vitor Ferreira Balan
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café-Subsetor Oeste-11 (N-11), Ribeirão Preto 14040-904, Brazil
| | - Eduardo Pires Godoy
- Department of Oral Biology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-904, Brazil
| | - Samuel Porfirio Xavier
- Department of Oral and Maxillofacial Surgery and Periodontology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Av. do Café-Subsetor Oeste-11 (N-11), Ribeirão Preto 14040-904, Brazil
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Canullo L, Iacono R, Pires Godoy E, Punzo A, Cavicchia A, Gianfreda F, Bollero P. Hybrid Funnel Technique: A Novel Approach for Implant Site Preparation: A Pilot Study. Dent J (Basel) 2022; 10:dj10090157. [PMID: 36135152 PMCID: PMC9497956 DOI: 10.3390/dj10090157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/18/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Different techniques and tools have been developed for implant site preparation. In this clinical scenario, Hybrid Funnel Technique (HFT), a novel osteotomy procedure, has been proposed. (2) Aim: The aim of this retrospective observational study was to consider the different responses to compression of the histological bony compartments (cancellus and cortical). HFT involves the use of multiple drills for the cortical layer preparation and of an osteotome for the osteocompaction of the cancellous bone. (3) Materials and Methods: Following computer-supported implant planning and guided surgery, 10 osteotomies with HFT were performed and 10 implants with the same length and diameter were placed in seven healthy and no daily smoking patients. Periapical X-ray and intraoral photographs were performed at baseline and after 12 months of follow-up to evaluate marginal bone level (MBL) changes and aesthetic results obtained from implant prosthetic rehabilitation. (4) Results: At 1 year of follow-up, 100% of the implants were successfully integrated, MBL change mean value was 0.17 mm ± 0.21. No differences in terms of MBL were noted between thin and thick biotypes. Pink esthetic score (PES) and white esthetic score (WES), assessed one year after definitive restoration placement, were 7.5 ± 2.3 and 8.5 ± 1.1, respectively. (5) Conclusions: Based on the findings of this preliminary clinical study, HFT has led to stability of peri-implant tissues and could represent a reliable technique for surgical preparation of the implant site.
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Affiliation(s)
- Luigi Canullo
- Department of Periodontology, University of Bern, 3012 Bern, Switzerland
| | - Roberta Iacono
- F.A.S Screening for Prevention and Oral Health, Department of Oral and Maxillofacial Science, Sapienza University of Rome, 00185 Rome, Italy
| | - Eduardo Pires Godoy
- Department of Oral Biology, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, São Paulo 14040-904, Brazil
| | | | - Alessio Cavicchia
- Department of Industrial Engineering, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Francesco Gianfreda
- Department of Industrial Engineering, University of Rome “Tor Vergata”, 00133 Rome, Italy
- Correspondence:
| | - Patrizio Bollero
- Department of System Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy
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Ferreira Balan V, Botticelli D, Peñarrocha-Oltra D, Masuda K, Pires Godoy E, Xavier SP. Maxillary Sinus Floor Augmentation with Two Different Inorganic Bovine Bone Grafts: an Experimental Study in Rabbits. Chin J Dent Res 2022; 25:93-105. [PMID: 35686589 DOI: 10.3290/j.cjdr.b3086337] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
OBJECTIVE To compare the sequential healing of maxillary sinuses grafted with two different xenogeneic bone substitutes processed at either a low (300°C) or high (1200°C) temperature. METHODS A sinus augmentation procedure was performed bilaterally in 20 rabbits and two different xenogeneic bone grafts were randomly used to fill the elevated spaces. Healing was studied after 2 and 10 weeks, in 10 rabbits during each period. RESULTS After 2 weeks of healing, very small amounts of new bone were observed in both groups, and were mainly confined to close to the sinus bone walls and osteotomy edges. After 10 weeks of healing, new bone was found in all regions, with higher percentages in those close to the bone walls and to the osteotomy. In this period of healing, the proportion of new bone in the 300°C group was 20.0% ± 4.3%, and in the 1200°C group it was 17.2% ± 4.3% (P = 0.162). In the 1200°C group, translucent, dark fog-like shadows in regions of the grafts were hiding portions of new bone (interpenetrating bone network). CONCLUSION Both biomaterials provided conditions that allowed bone growth within the elevated space, confirming that both biomaterials are suitable to be used as a graft for sinus floor augmentation.
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