A group designed for everyone interested in dental research

• Dr. Mark Joseph Manhart

  Were is the excellent research on calcium published a few years ago by dentists in Ankara, turkey

  Their results are applicable ot every dental field.
• Samira Zare

  Does anyone know of any advantage of quartz over glass fiber posts?

  Which do you prefer? Why?

  Recent replies ⋅ Show All (13)

  • 
    Samira Zare replied

    Tnx a lot Dr. Junker for the information and your experiences. I know that fiber post placement is a very technique sensitive procedure and call so much attention but sometime (as you said) oneTnx a lot Dr. Junker for the information and your experiences. I know that fiber post placement is a very technique sensitive procedure and call so much attention but sometime (as you said) one should select one of the "Dentin like posts". So you are in agreement to choose the glass ones! For me, there is a question about the porcelain cap. Did you mean porcelain crown or something else?

    2 days ago
• Adnan Khan

  How can tartar and plaque be removed from teeth without grinding? is there any paste, etc. for it?

  How can tartar and plaque be removed from teeth without grinding? is there any paste, etc. for it?

  Recent replies ⋅ Show All (5)

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    Jörg Junker replied

    To remove tartar You have to use scalers, curettes or ultrasonic devices. Plaque should be removed a) by the patient at home (important: motivation of the patient to care for his/her teeth) or b) inTo remove tartar You have to use scalers, curettes or ultrasonic devices. Plaque should be removed a) by the patient at home (important: motivation of the patient to care for his/her teeth) or b) in the studio with turning devices. Sometimes you can support with chlorhexidine(CHX).

    3 days ago
• Guna Sekar

  Can any one give a good choice for analysis of speech (acoustic analysis)?

  My study is on speech improvement in maxillary complete denture by replication of palatal anatomy, for that objective analysis we have plan to use spectrogram.

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    Sandra Merlo replied

    Hello, I use Praat software for acoustical analysis of speech (http://www.fon.hum.uva.nl/praat/). I like it very much.

    11 days ago
• Drgrp kl

  How efficient are Damon System brackets?

  Do these have an efficient ability in finishing Class I Bimaxillary protrusion cases?

  Recent replies ⋅ Show All (13)

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    Drgrp kl replied

    Dear Orthodontics, The references you have made in your posts did help me with some additional knowledge about the system. But the main question of efficient management of complex cases stillDear Orthodontics, The references you have made in your posts did help me with some additional knowledge about the system. But the main question of efficient management of complex cases still remains a challenge. And also dear doctors let us not go into the marketing or publicity gimmicks of the system but stick to the technical and treatment oriented discussion thus making it more of a resource for students like me. Also i have a further question about the length of treatment with these brackets? Are these of any help in reducing the treatment time drastically?

    13 days ago
• Sudheer Aluru

  Microbiology of periodontics

  I would like to know if anyone has tested antibiotic susceptibility of periodontal microbes. Has anyone performed a MIC of these organisms? Regards.

  Recent replies ⋅ Show All (3)

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    Sudheer Aluru replied

    Thank You William Buwembo and Kevin Carter... I actually needed this information for references in carrying out my work..!! thanks a ton..!!

    13 days ago
• Nathalie Dantan

  Does somebody know how to prove/explain scientifically the antibacterial effect of copper dental cements?

  The antimicrobial activity of copper has been known for its healing properties since antiquity. Towards the end of the 19th century zinc phosphate dental cements with added low-water soluble copperThe antimicrobial activity of copper has been known for its healing properties since antiquity. Towards the end of the 19th century zinc phosphate dental cements with added low-water soluble copper salts at low concentration have been generally used and their effectiveness has been proved through clinical studies.

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    Antonio DiNunno replied

    Too bad on those ships with the copper plated hulls, they used steel nails to attach them...they all fell off onto the bottom of the sea. Good old times had many things right, but had a lot to learn.Too bad on those ships with the copper plated hulls, they used steel nails to attach them...they all fell off onto the bottom of the sea. Good old times had many things right, but had a lot to learn. That incident led to the understanding of galvanic corrosion. "the biologically active silver ion (Ag+) to irreversibly damage key enzyme systems in the cell membranes of pathogens.[12] The antibacterial action of silver has long been known to be enhanced by the presence of an electric field. Applying a few volts of electricity across silver electrodes drastically enhances the rate bacteria in solution are killed." "Metal ions, especially those of heavy metals, show this effect. The exact mechanism of action is still unknown. Data from silver suggest that these ions denature enzymes of the target cell or organism by binding to reactive groups, resulting in their precipitation and inactivation.[2] Silver inactivates enzymes by reacting with the thiol groups to form silver sulfides. Silver also reacts with the amino-, carboxyl-, phosphate-, and imidazole-groups and diminish the activities of lactate dehydrogenase and glutathione peroxidase. Bacteria are in general affected by the oligodynamic effect. Viruses in general are not very sensitive to this effect" "Certain metals, such as silver, copper and copper alloys, are known to be far more poisonous to bacteria than others, such as stainless steel and aluminium, which is why they are used in mineral sanitizers for swimming pools and spas." I'm not a biochemist...so I had to use Wiki.

    14 days ago
• Saifeddin abu asab

  A question about occlusion

  After using the articulating paper for studying the occlusion of a case, do you think that large spots (on the a sound tooth not on a resortion) usually indicate a future carious lesion cavity? DoAfter using the articulating paper for studying the occlusion of a case, do you think that large spots (on the a sound tooth not on a resortion) usually indicate a future carious lesion cavity? Do you think that we should remove these spots until we reach a small dots scatered all over the other teeth or leave them as the patient is adapt to this? Can we consider removing them a precussion measure?

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    Dr. Mark Joseph Manhart replied

    Dr. Asab, The idea seems contrary to experience. Removing enamel to "correct" the bite, counterproductive. Root canal and perio therapy may include slight enamel adjustment if the infection hasDr. Asab, The idea seems contrary to experience. Removing enamel to "correct" the bite, counterproductive. Root canal and perio therapy may include slight enamel adjustment if the infection has evulsed the tooth and it needs a little breathing room. We do this on rare occasions and use calcium/zinc applications in those instances, which strengthen the dentition and stimulate healing of the periodontium. This method led us to such materials that do wonders for many skin conditions. Our research is now into better understanding the benefits of calcium/zinc which may safely control inflammations of the lower intestine as we detail online with diastemic cysts, fusobacteria, and clostridium difficle.

    17 days ago
• Marchella Nieve

  Growth mediums for Aggregatibacter actinomycetemcomitans?

  I am making a proposal for a research for final assignment (thesis, paper, or whatever you name it). I browsed for some growth media for Aggregatibacter actinomycetemcomitans. I found some journalsI am making a proposal for a research for final assignment (thesis, paper, or whatever you name it). I browsed for some growth media for Aggregatibacter actinomycetemcomitans. I found some journals about AAGM, TSBV, Dentaid-1, and GCHB. They all need antibiotic in them. Is there any growth medium for Aggregatibacter actinomycetemcomitans which doesn't need antibiotic in it? Thank you very much.

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    Sudheer Aluru replied

    If at all u find any periodontal organism...plz let me know for sure..!!

    23 days ago
• Dr.Abhitosh Debata

  "snap-on dentures"

  What are snap-on dentures? A snap-on denture is a type of overdenture that is supported by and attached to implants. An overdenture is attached to implants, while a regular denture rests on theWhat are snap-on dentures? A snap-on denture is a type of overdenture that is supported by and attached to implants. An overdenture is attached to implants, while a regular denture rests on the gums, is not supported by implants, and tends to fit less firmly in the mouth. A snap-on denture is used when a person doesn’t have any teeth in the jaw, but has enough bone in the jaw to support implants. An implant-supported denture has special attachments that snap onto attachments on the implants.

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    Marcia Moraes replied

    Everything you need to do is shape the arch of the patient with addition silicone and send to the manufacturer, which manufactures the Snap On Smile prosthesis, made of a certain type of acetate. TheEverything you need to do is shape the arch of the patient with addition silicone and send to the manufacturer, which manufactures the Snap On Smile prosthesis, made of a certain type of acetate. The prosthesis is fitted onto the natural teeth, allowing speech, food, etc.. Must be removed for cleaning.

    28 days ago
• Monica Soto

  Which are the general procedures for an avulsed immature permanent tooth?

  Which are the general procedures for an avulsed immature permanent tooth?

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    Somija Dissanayaka replied

    1) Immediate replantation within 30 min + Antibiotics for 3days + 2-4 weeks review 2) non setting calcium hydroxide RCT + regular review until apexification 3) Permanent RCT with GP

    Apr 28, 2012
• Mandana Hosseini

  Can anyone recommend an ultrasonic device to determine gingiva thickness?

  I am a dental researcher and need an ultrasonic device to measure the thickness of gingiva. In some articles an ultrasonic device from Krupp SDM®, Austenal Medizintechnik, Cologne, Germany has beenI am a dental researcher and need an ultrasonic device to measure the thickness of gingiva. In some articles an ultrasonic device from Krupp SDM®, Austenal Medizintechnik, Cologne, Germany has been used, but it is not produced any longer. Does anybody know if there are other non-invasive alternatives? Maybe there is some device to determine the thickness of skin that could also been used intraorally?

  http://www.springerlink.com/content/e64162605653l2u6/

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    Wojciech Bednarz replied

    Write the article about new ultrasonic device with frequency 20 MHz, probe with diameter about 1,7mm and reaching values rounded to 0,01mm for measurement of soft tissues tickness -Write the article about new ultrasonic device with frequency 20 MHz, probe with diameter about 1,7mm and reaching values rounded to 0,01mm for measurement of soft tissues tickness - www.dmp.am.wroc.pl. In issues 3/2011 and 4/2011 my research about it can be found. Bednarz W.: The thickness of periodontal soft tissue ultrasonic examination – current possibilities and perspectives. Dent. Med. Probl.,2011,48,3,303-310. Bednarz W., Zielińska A.: Ultrasonic Biometer and its usage in an assessment of periodontal soft tissue thickness and comparison of its measurement accuracy with a bone sounding method. Dent. Med. Probl.,2011,48,4,481-489. Best regards Wojciech Bednarz

    Apr 26, 2012
• Björn Neumann

  Green Primary Teeth

  Has anybody experienced patients whith green pigmented primary teeth? I'm following a boy with green primary teeth, supposedly due to longtime hyperbilirubinemia in early life. I'm interested inHas anybody experienced patients whith green pigmented primary teeth? I'm following a boy with green primary teeth, supposedly due to longtime hyperbilirubinemia in early life. I'm interested in your experiences.

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    Biniyam Wondimu replied

    Greenish discoloration of the primary and the permanent teeth is a common feature among children with liver problem. I recommend a publication from 2001 in International Journal of PaediatricGreenish discoloration of the primary and the permanent teeth is a common feature among children with liver problem. I recommend a publication from 2001 in International Journal of Paediatric Dentistry 2001; 11: 424-429

    Apr 26, 2012
• Derek Golding

  Development of a Nanoparticle coating to whiten teeth but is not a bleaching product.

  I am interested in nano particle materials similar to the ones that are used in coating pills. These could be applied by the dentist to the teeth. Is any body involved in research of any materialsI am interested in nano particle materials similar to the ones that are used in coating pills. These could be applied by the dentist to the teeth. Is any body involved in research of any materials that may be used in this way? Obviously the material would have to be bio-compatible with the hydroxyappatite structure of teeth.

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    Dr. Mark Joseph Manhart replied

    Drs. Derek Golding and Furqan Shah, since 1965 we have designed and used several calcium/zinc materials that when used together whiten teeth by simple long-range presence of calcium in the mouth. InDrs. Derek Golding and Furqan Shah, since 1965 we have designed and used several calcium/zinc materials that when used together whiten teeth by simple long-range presence of calcium in the mouth. In fact they can be used in every field of dentistry, even a tissue conditioner under dentures and partials. They make dental hygiene care a breeze, eliminate calculus, bad breath and periodontal disease. Take note of the bacteria research on www.calciumtherapy.com and a specific therapy for the Diastemic Dilemma presented at the 2009 ConsEuro Congress in Sevilla, Spain, COI Journal.

    Apr 24, 2012
• Dr.Abhitosh Debata

  Nanodentistry-A Dental Boon!!

  Nanodentistry is an emerging field with significant potential to yield new generation of technologically advanced clinical tools and devices for oral healthcare. Nanoscale topology and quantitativeNanodentistry is an emerging field with significant potential to yield new generation of technologically advanced clinical tools and devices for oral healthcare. Nanoscale topology and quantitative biomechanical or biophysical analysis of dental surfaces are of significant interest. In particular, using Atomic force microscopy techniques—diseases such as dental caries, tooth hypersensitivity, and oral cancer can be quantified based on morphological, biophysical and biochemical nanoscale properties of tooth surface itself and dental materials or oral fluids such as saliva. An outlook on future “nanodentistry” developments such as saliva exosomes based diagnostics, designing biocompatible, antimicrobial dental implants and personalized dental healthcare is presented..It will also become possible to prevent periodontal disease and other oral complications with nanodentistry. The devices will make it easier to diagnose the smallest of problems at the earliest and the dentists will be able to devise a treatment to counter the effects of a particular disease or condition. The fact that nanodevices cannot be seen make them even more powerful. However, some scientists believe that other than providing unlimited benefits, these devices can also bring dangers due to mishandling or misuse. But again everything has its pros and cons and if we look at nanodentistry we find that its pros far outweigh the cons and therefore we should be looking forward to its emergence and popularity

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    Karthikeyan Subramani replied

    New book from Elsevier on Dental applications of Nanotechnology "Emerging Nanotechnologies in Dentistry" (Foreword by: 1996 Nobel Laureate in Chemistry Sir Harold KrotoNew book from Elsevier on Dental applications of Nanotechnology "Emerging Nanotechnologies in Dentistry" (Foreword by: 1996 Nobel Laureate in Chemistry Sir Harold Kroto FRS) http://store.elsevier.com/product.jsp?isbn=9781455778621 Key Features: Book prepared by an interdisciplinary and international group of bio-nanomaterial scientists and dental/oral biomedical researchers. Comprehensive professional reference for the subject covering materials fabrication and use of materials for all major diagnostic and therapeutic dental applications - repair,restoration, regeneration, implants and prevention Book focuses in depth on the materials manufacturing processes involved with emphasis on pre-clinical and clinical applications, use and biocompatibility Description: New nanomaterials are leading to a range of emerging dental treatments that utilize more biomimetic materials that more closely duplicate natural tooth structure (or bone, in the case of implants). The use of nanostructures that will work in harmony with the body's own regenerative processes (eg, to restore tooth structure or alveolar bone) are moving into clinical practice. This book brings together an international team of experts from the fields of nanomaterials, biomedical engineering and dentistry, to cover the new materials and techniques with potential for use intra-orally or extra-orally for the restoration, fixation, replacement, or regeneration of hard and soft tissues in and about the oral cavity and craniofacial region. New dental nanotechnologies include the use of advanced inorganic and organic materials, smart and biomimetic materials, tissue engineering and drug delivery strategies. Contents: CHAPTER 1 Nanotechnology and the future of Dentistry CHAPTER 2 Nanoparticles for Dental Materials: Synthesis, analysis and Applications CHAPTER 3 Antimicrobial nanoparticles in Restorative Composites CHAPTER 4 Nanotechnology in operative dentistry: a perspective approach of history, mechanical behavior and clinical application CHAPTER 5 Nanotechnology and dental implants CHAPTER 6 Titanium surface modification techniques for dental implants - From microscale to nanoscale CHAPTER 7 Titanium nanotubes as carriers of osteogenic growth factors and antibacterial drugs for applications in dental implantology CHAPTER 8 Cellular responses to nanoscale surface modifications of titanium implants for dentistry and bone tissue engineering applications CHAPTER 9 Corrosion Resistance of Ti6Al4V with Nanostructured TiO2 Coatings CHAPTER 10 Multiwalled Carbon Nanotubes/Hydroxyapatite Nanoparticles incorporated GTR membranes CHAPTER 11 Fabrication of PEG hydrogel micropatterns by Soft-photolithography and PEG hydrogel as Guided Bone Regeneration membrane in dental implantology CHAPTER 12 Nano-Apatitic Composite Scaffolds for Stem Cell Delivery and Bone Tissue Engineering CHAPTER 13 Self-assembly of Proteins and Peptides and their applications in Bionanotechnology and Dentistry CHAPTER 14 Bone regeneration using self-assembled nanoparticle based scaffolds CHAPTER 15 Surface engineering of Dental Tools with diamond for improved life and performance CHAPTER 16 Nanomechanical characterization of mineralized tissues in the oral cavity CHAPTER 17 Nanoindentation techniques for the determination of mechanical properties of materials in dentistry CHAPTER 18 Nanocharacterisation techniques for dental implant development CHAPTER 19 Nanoparticulate Drug Delivery Systems for Oral Cancer Treatment CHAPTER 20 Carbon nanotubes in cancer therapy and drug delivery CHAPTER 21 Nanodiagnostics in Microbiology and Dentistry

    

    Apr 23, 2012