6,286 research outputs found
Esthetic management of space and soft tissue deficiencies in implant therapy: combined orthodontic-mucogingival approach
No full textThe esthetic success of a case requiring implant therapy mainly depends on both the correct planning and the surgical-prosthetic execution. However, planning and surgical implementation according to prosthetically guided criteria are not always possible due to contingent anatomical limitations. When this is further complicated by the presence of mucogingival deficiencies in a highly visible esthetic area, the management of the case can become very complex. The present case report describes the presurgical and surgical management of a case of maxillary lateral incisor agenesis in the absence of sufficient vertical space. Through orthodontic therapy, the opening of the deep overbite and the alignment of the maxillary and mandibular arches were obtained, allowing for an implant positioning without compromises dictated by anatomical limitations. Finally, through mucogingival surgery and careful management of the provisional prosthetic phase, an optimal esthetic profile was achieved
The Scripps Family\u27s San Diego Experiment
No full textMolly McClain is an associate professor in the department of history at the University of San Diego and co-editor of The Journal of San Diego History. She is the author of “The Bishop’s School, 1909-2009,” in the Fall 2008 issue of this Journal. This article forms part of a forthcoming biography of Ellen Browning Scripps. Special thanks to Judy Harvey Sahak, Dorran Boyle, Colin Fisher, Scripps College, the La Jolla Historical Society, and the San Diego History Center
Managing the Peri-implant Mucosa: A Clinically Reliable Method for Optimizing Soft Tissue Contours and Emergence Profile
No full textSTATE OF THE PROBLEM:
The proper representation of soft tissue contours for a natural aspect of the peri-implant mucosa and its mimesis with the adjacent teeth is a crucial aspect of the esthetic area restoration.
PURPOSE:
This paper describes a method for the easy transfer of the peri-implant tissue morphology onto impression material with a view to achieving an accurate, custom implant restoration. The procedure described is suitable both for single and multi-unit implant-supported prostheses.
CLINICAL PROCEDURES:
Once the peri-implant mucosa is sculpted by the provisional restoration, the emergence profile is duplicated. The implant analog is embedded into laboratory stone or plaster in a mixing cup and allowed to set. The provisional restoration is removed from the oral cavity and screwed to the implant analog; then, a polyether material is placed in the mixing cup so that the provisional restoration is put into impression material at the level of the prosthetic emergence profile. After the polyether polymerizing, the provisional prosthesis is unscrewed and replaced with the stock hexed transfer for the final impression. Next, cold self-curing resin is poured into this gap and left to set. A custom transfer for this single implant site is thus obtained. This modified transfer is then removed and screwed onto the implant in the oral cavity for the definitive impression.
CONCLUSIONS:
The technique described enables a faithful reproduction of the peri-implant soft tissues and emergence profile.
CLINICAL SIGNIFICANCE:
An emergence profile that mimics the natural tooth should be obtained by successful esthetic implant restoration. Moreover, it allows proper hygiene, which is fundamental for implant maintenance. The best way to achieve the correct emergence profile is to sculpture the peri-implant mucosa by means of a provisional prosthesis. Prefabricated provisional crowns cannot mimic the complexity and the variations of human soft tissue. Therefore, only a chair-side modification of the provisional restoration can accomplish the optimal result. Such a requirement can be satisfied by the clinical method described in the present report
Conometric retention for complete fixed prosthesis supported by four implants: 2-years prospective study.
No full textOBJECTIVE:
The aim of this study was to verify the reliability of a conometric system for a fixed retention of complete prostheses (CPs) on four implants followed for 2 years.
MATERIAL AND METHODS:
Twenty-five patients received four implants and only one CPs for a total of 100 implants followed. Each prosthesis was supported by four implants. An immediate loading surgical protocol was used. The CPs were provided to be fixed to conometric abutments without prostheses removal by the patients, to test this retention for a fixed instead of a removable rehabilitation. Clinical and radiographical parameters were assessed at the yearly follow-up visit. A follow-up of 2 years was observed for each patient. Moreover, biological and technical complications were recorded. Changes overtime of clinical and radiographic parameters were analyzed as well as the satisfaction degree for each patient.
RESULTS:
No patient was classified as "dropout." The following results were observed after 2 years of follow-up: all the implants supporting the 25 CPs completed the follow-up examination. No implant, reconstruction, and abutment failure were recorded; therefore, the prosthetic survival was 100% for all the abutments and restorations. No significant differences in biological indexes were observed when compared with the baseline. No significant change of the mean marginal bone level (MBL) was found between the baseline and the last follow-up. No loss of retention was recorded for the CPs. No technical complications referred to abutments and frameworks were observed: a prosthetic survival rate of 100% can be recorded. Mucositis was recorded for two implants and successfully treated with interceptive supportive therapy. No significant differences (P < 0.05) were found between plaque index and MBi parameters at baseline and after 2 years of function. Similar results were recorded for the mean probing pocket depth Index at baseline (1.2 mm with SD of 0.3 mm) and after 2 years of function (1.2 mm with SD of 0.2 mm).
CONCLUSIONS:
The present implant-supported conometric retention system can be used to give a fixed retention to a CPs supported by four implants immediately loaded. Furthermore, costs reduction and simplified treatment procedures were provided by such a clinical approach
Efficacy of an anesthetic gel in the reduction of pain during impression making
No full textGingival tissue displacement can be an uncomfortable procedure, often performed without injectable local anesthesia. The present study evaluated the efficacy of an anesthetic gel in reducing pain during this procedure.
MATERIAL AND METHODS:
Thirty patients undergoing definitive dental impression, for fabricating full-coverage restorations, were evaluated for pain perception on displacement of the surrounding gingival tissues. All the participants were randomly divided into two groups. Five minutes before the insertion of the displacement cord, the anesthetic gel, a mixture of 5% lidocaine and 5% prilocaine, was applied in the sulcus of test group patients. Each patient was asked to complete the Visual Analogue Scale (VAS) and the Verbal Rating Scale (VRS).
RESULTS:
In the two scales considered, test group patients showed a statistically significant pain reduction (VAS p=0.0002, VRS p=0.01054) compared to control group patients.
CONCLUSIONS:
Within the limitations of this study, a clinically significant efficacy of the anesthetic gel was noticed during gingival displacement procedures
The San Diego River: A Natural, Historic, and Recreational Resource
No full textThe purpose of this Article is to briefly consider the historical importance of the San Diego River, to examine the water quality challenges impacting the River today, and to analyze the principal regulatory programs administered by the Regional Board to meet these challenges. The author\u27s premise is that the water quality of the River is essential to its functional integrity and future
USD News Scrapbook 1971-01
No full textScrapbook of University of San Diego newspaper clippings covering topics such as Author Hughes\u27 inauguration as president, athletics, the School of Law, the San Diego Mission excavation, and campus events. Clippings in this scrapbook are arranged chronologically. Bookmarks have been added to the PDF for direct access to specific dates. While Optical Character Recognition (OCR) has been performed on this PDF, the condition of the scrapbooks limits the reliability. Researchers are not advised to rely on OCR to find articles on specific topics.https://digital.sandiego.edu/newsscrapbooks/1007/thumbnail.jp
A History of Catholic School Education in San Diego County, California, from 1850 to 1936
No full textThe purpose of this dissertation was to research, present, and thus to preserve, information concerning Catholic school education in San Diego County from 1850 to 1936. The historical method of research was the research methodology utilized in the study, in which the author primarily investigated original documents stored in religious archives. The author details the thirteen Catholic schools that came into existence during the time period; describes the background and arrival in San Diego County of the seven religious communities that conducted the various schools; and portrays the early leaders responsible for the growth and development of Catholic education in San Diego County. It was noted in the dissertation that Catholic schools gained a foothold in San Diego County in the 1880\u27s largely through the initiative of Father Anthony Dominic Uback, pastor of San Diego from 1866 to 1907. This Catholic leader was responsible for securing the first religious community of women to teach in San Diego County, the Sisters of St. Joseph of Carondelet, an influential community who would conduct seven of the first nine Catholic schools to open in the County. Until 1936, San Diego County formed a part of either the Diocese of Monterey or of Los Angeles, and it was concluded that, in comparison to the rest of the Diocese, Catholic education developed slowly in San Diego County. Indeed, prior to 1900, there existed only one private school for Catholics, the Academy of Our Lady of Peace, and three schools for Indians. It was not until 1912 that the first diocesan school opened in San Diego County. Nevertheless the Catholic schools instituted during the eighty-six year period under investigation were widely dispersed throughout the County, from San Ysidro in the south, Fort Yuma in the east and San Luis Rey in the north. The dissertation may serve as a valuable contribution to the study of Catholic educational history in San Diego County. Furthermore, a better understanding of contemporary Catholic education is gained throughout the background of historical research documented in the study
Osteoproperties of polyethylene glycol hydrogel material
No full textJournal of Osseointegration
Volume 6, Issue 3, 1 October 2014, Pages 61-65
Open Access
Osteoproperties of polyethylene glycol hydrogel material (Article)
Lops, D.a,
Feroni, L.b,
Gardin, C.A.b,
Ricci, S.c,
Guazzo, R.c,
Sbricoli, L.c,
Romeo, E.a,
Calvo-Guirado, J.L.d,
Bressan, E.c,
Zavan, B.A.b
a Department of Prosthodontics, University of Milan, S. Paolo Hospital, Milano, Italy
b Department of Biomedical Sciences, University of Padua, Padua, Italy
c Department of Neurosciences, University of Padua, Padua, Italy
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Abstract
Results The in vitro results confirmed that the ADSCs were able to attach to the hydrogel and differentiate towards the osteogenic phenotype. Furthermore, array CGH analysis detected no chromosomal abnormalities, confirming the safety of the 3D cultures.
Aim The aim of the present study was to test the osteogenic potential of a synthetic hydrogel made of polyethylene glycol (PEG), loaded with adult mesenchymal stem cells, used as a biodegradable membrane for guided bone regeneration (GBR).
Materials and methods Adult mesenchymal stem cells derived from adipose tissue (ADSCs) were isolated, characterized, and seeded on the hydrogel. After 15 days of culture, the scaffolds were analyzed with scanning electron microscopy (SEM) and real-time PCR to assess osteogenesis, and by means array CGH (Comparative Genomic Hybridization) to test their safety.
Conclusion The PEG hydrogel, loaded with adult mesenchymal stem cells, seems to have an osteogenic potential and therefore could be successfully used as a membrane in the treatment of bone defects
Diego Gracián de Alderete: The Clandestine Author of the Diálogo de los pajes
No full text[Resumen] Este estudio propone que Diego Gracián de Alderete, bajo el seudónimo de Diego de Hermosilla, fue el autor del Diálogo de los pajes. La afirmación se cimenta en un perfil del autor creado a partir de las referencias históricas, literarias y sociales vertidas en el texto, y se apoya en fuentes inexploradas o no contrastadas hasta ahora.[Abstract] This study argues that Diego Gracián de Alderete, under the pseudonym Diego de Hermosilla, was the author of the Diálogo de los pajes. The claim is founded on an author’s profile generated from the historical, literary, and social references presented in the text, and it is supported by sources not explored or contrasted before
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