A study of several species of the genus monarda**Scientific Section, A. Ph. A., Dallas meeting, 1936.11From a dissertation presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy at the University of Florida, August 1935.

Christensen, B.V.; Justice, R.S.

doi:10.1002/jps.3080260506

Cited by 5 publications

(6 citation statements)

References 2 publications

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“…In some edentulous areas that have limitations, such as inadequate bone volume, length, and height of the ridge, dental mini-implants are recommended instead of standard implants. Dental mini-implants are easy to place, have low cost, and use minimally invasive surgical procedures [ 9 ]. However, the implant diameter has an influence on stress distribution along the bone-implant interface, as investigated by Misch and Bidez [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Location of Dental Mini-Implants on Strain Distribution under Mandibular Kennedy Class I Implant-Retained Removable Partial Dentures

Rungsiyakull

Kujarearntaworn²,

Khongkhunthian

et al. 2021

International Journal of Dentistry

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Purpose. To investigate the effect of minidental implant location on strain distributions transmitted to tooth abutments and dental minidental implants under mandibular distal extension removable partial denture. Materials and Methods. A mandibular Kennedy Class I distal extension model missing teeth 35–37 and 45–47 was constructed. Six dental mini-implants were placed at positions A, B, and C, where position A was 6.5 mm distal to the abutment teeth with 5 mm between each position. Fourteen uniaxial strain gauges were bonded on the model at the region of dental mini-implant and abutment (first premolar). Four groups were designated according to the location of the mini-implants. A load of 150 N and 200 N was applied using an Instron testing machine. Loadings consisted of bilateral and unilateral loading. Comparisons of the mean microstrains among all strain gauges in all situations were analyzed. Results. Variation in mini-implant locations induced local strains in different areas. Strains at the tooth abutment were significantly decreased in the group in which implants were placed mesially. Strains around the mini-implants showed different patterns when loaded with different loading conditions. The group in which implants were placed distally showed the lowest strains compared to other groups. Conclusion. Mesially placed mini-implants showed the lowest strain around abutment teeth, while a distally-placed mini-implants presented the lowest strain around mini-implants themselves. Under favorable biting force, mini-implant is an option to assist mandibular distal extension removable partial denture. Mesially placed mini-implants are recommended when the abutment has periodontally compromised conditions and a distally placed mini-implant when periodontal conditions are stable.

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Section: Introductionmentioning

confidence: 99%

Effect of the Location of Dental Mini-Implants on Strain Distribution under Mandibular Kennedy Class I Implant-Retained Removable Partial Dentures

Rungsiyakull

Kujarearntaworn²,

Khongkhunthian

et al. 2021

International Journal of Dentistry

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Section: Introductionmentioning

confidence: 99%

“…Mini dental implants have been in use for the last 12 years [ 21 – 36 ] and offer a number of advantages over conventional implants: they have a smaller diameter (<2.4 mm) and are often made of a titanium alloy (Ti 6Al-4 V ELI) as opposed to commercially pure titanium (type 4) used in conventional dental implants. They are often placed using a minimally invasive technique, resulting in less post-operative pain [ 37 ]; and are therefore approximately a quarter of the cost of current conventional alternatives [ 21 , 22 ]. These advantages need to be considered against a potentially higher failure rate [ 38 ] when compared to conventional implants, which have an impressively high survival rate over 10 years [ 15 ], and possibly a need for more intensive on-going maintenance [ 39 ].…”

Section: Introductionmentioning

confidence: 99%

A pilot randomised controlled trial evaluating mini and conventional implant retained dentures on the function and quality of life of patients with an edentulous mandible

et al. 2017

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BackgroundTotal tooth loss (edentulism) can be a debilitating condition, impacting on ability to chew, speak and interact with others. The most common treatment is with complete removable dentures, which may be successful, but in the lower jaw, bone resorption that worsens over time makes denture-wearing difficult. Two dental implants in the mandible to retain the lower denture has been advocated as the gold standard of treatment, but has not been universally provided due largely to financial constraints and also patient fear. Mini implants (MI) are cheaper and less invasive than conventional implants (CI), but may not have equivalent longevity. Therefore, it is unknown whether they represent a cost-effective treatment modality over time. The aim of this pilot randomised controlled trial was to assess the feasibility of carrying out a trial on this cohort of patients, and to inform the study design of a large multicentre trial.MethodsForty-six patients were randomly allocated to receive either two mini implants or two conventional implants in the mandible to retain their lower dentures. Quality of life (QoL) questionnaires, pain and anxiety scores, and an objective “gummy jelly” chewing test were carried out at multiple timepoints, along with detailed health economics information. Implants were placed one-stage, and an early loading protocol was utilised. Patients were reviewed 8 weeks post-placement, and finally at 6 months. Implant failure, recruitment and retention rates were recorded and analysed.ResultsThe pilot study demonstrated that it is possible to recruit, randomise and retain edentulous (mainly elderly) patients for an implant trial. We recruited to target and retention rates were acceptable. The large number of questionnaires was onerous for participants to complete, but the distribution of scores and feedback from participants helped inform the choice of primary and secondary outcomes in a full trial. The chewing test was time-consuming and inconsistent. Implant failure rate was low (1/46). The data on indirect costs gathered at every visit was viewed as repetitive and unnecessary, as there was little or no change between visits.ConclusionsThe pilot study has shown that acceptable recruitment and retention rates are achievable in this population of patients for this intervention. The results provide valuable information for selection of outcome variables and sample size calculations for future trials.Trial registration(ISRCTN): 87342238 Trial registration date: 05/07/2013.Electronic supplementary materialThe online version of this article (doi:10.1186/s12903-017-0333-1) contains supplementary material, which is available to authorized users.

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“…However, many geriatric edentulous patients have a variety of systemic diseases and frequently exhibit severe bone resorption that can make implant placement impossible. Furthermore, this treatment presents many disadvantages such as cost and an extended treatment period with delayed loading of the prosthesis [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Predictive Parameters of Oral Health Quality of Life in Complete Mandibular Denture Wearers Stabilized by Mini-Implants: A Two-Year Follow-Up Study

et al. 2017

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The frequent instability of mandibular removable complete dentures affects patient Oral Health Related Quality of Life (OHRQoL). An innovative therapeutic strategy used to improve stability involves placing four symphyseal mini-implants. This study was aimed at assessing OHRQoL over time in subjects in which mini-implants were placed and exploring if certain parameters could predict the evolution of their OHRQoL. The Quality of life of subjects with dentures was assessed using the Geriatric Oral Health Assessment Index (GOHAI) before (T0), 2–6 months (T1), twelve months (T2) and twenty-four or more months (T3) after mini-implant setting. Age, gender and chewing ability were tested as explanatory variables for the change in OHRQoL with time. Thirteen women and six men were included (mean age: 69 ± 10 years). After mini-implant placement, mean GOHAI scores at T1, T2 and T3 increased significantly (p < 0.001). The GOHAI-Add mean score was not affected by age or gender. Baseline chewing ability impacted the “functional” and “pain and discomfort” fields of the mean GOHAI scores (p < 0.05). The OHRQoL was quickly improved after mini-implant placement in complete denture wearers and then stabilized over time. Baseline chewing ability can be used as a predictive parameter of OHRQoL.

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A study of several species of the genus monarda**Scientific Section, A. Ph. A., Dallas meeting, 1936.11From a dissertation presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy at the University of Florida, August 1935.

Cited by 5 publications

References 2 publications

Effect of the Location of Dental Mini-Implants on Strain Distribution under Mandibular Kennedy Class I Implant-Retained Removable Partial Dentures

Effect of the Location of Dental Mini-Implants on Strain Distribution under Mandibular Kennedy Class I Implant-Retained Removable Partial Dentures

A pilot randomised controlled trial evaluating mini and conventional implant retained dentures on the function and quality of life of patients with an edentulous mandible

Predictive Parameters of Oral Health Quality of Life in Complete Mandibular Denture Wearers Stabilized by Mini-Implants: A Two-Year Follow-Up Study

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