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Assessment of Nitrofurantoin as an Experimental Intracanal Medicament in Endodontics. BIOMED RESEARCH INTERNATIONAL 2020; 2020:2128473. [PMID: 32149086 PMCID: PMC7049449 DOI: 10.1155/2020/2128473] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 11/08/2019] [Accepted: 11/26/2019] [Indexed: 11/30/2022]
Abstract
Background and Objectives. Multiple antibacterial agents have been mixed and used as an intracanal medicament-like modified triple antibiotic paste (MTAP) to eliminate Enterococcus faecalis (EF), which has been most frequently identified in the cases of failed root canal treatment and periapical lesions. This study is aimed at using a single antibacterial agent, nitrofurantoin (Nit), as an experimental intracanal medicament paste against different clinical isolates of EF), which has been most frequently identified in the cases of failed root canal treatment and periapical lesions. This study is aimed at using a single antibacterial agent, nitrofurantoin (Nit), as an experimental intracanal medicament paste against different clinical isolates of Materials and Methods. Three strains of EF), which has been most frequently identified in the cases of failed root canal treatment and periapical lesions. This study is aimed at using a single antibacterial agent, nitrofurantoin (Nit), as an experimental intracanal medicament paste against different clinical isolates of n = 90), group M (MTAP) (n = 90), group M (MTAP) (n = 90), group M (MTAP) (EF), which has been most frequently identified in the cases of failed root canal treatment and periapical lesions. This study is aimed at using a single antibacterial agent, nitrofurantoin (Nit), as an experimental intracanal medicament paste against different clinical isolates of n = 90), group M (MTAP) (n = 90), group M (MTAP) (n = 90), group M (MTAP) (EF), which has been most frequently identified in the cases of failed root canal treatment and periapical lesions. This study is aimed at using a single antibacterial agent, nitrofurantoin (Nit), as an experimental intracanal medicament paste against different clinical isolates of
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Sabrah AHA, Al-Asmar AA, Alsoleihat F, Al-Zer H. The discoloration effect of diluted minocycline containing triple antibiotic gel used in revascularization. J Dent Sci 2019; 15:181-185. [PMID: 32595899 PMCID: PMC7305458 DOI: 10.1016/j.jds.2019.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 06/24/2019] [Indexed: 11/16/2022] Open
Abstract
Background/purpose Triple antibiotic paste (TAP) has been successfully used in revascularization procedure. However, one of the problems associated with TAP use is teeth discoloration, which is attributed to the presence of minocycline constituent. The aim of this study is to investigate the discoloration effect of different concentrations of triple (TAP) and double (DAP) antibiotics pastes on root dentine. Materials and methods Sterilized dentine specimens (4 × 4 × 1) were prepared, and randomly assigned to 5 groups; 1000 mg/mL of Triple antibiotic paste (TAP), 1000 mg/mL of Double antibiotic paste (DAP), 1 mg/mL of TAP in Methylcellulose gel (MTAP), 1 mg/mL of DAP in Methylcellulose gel (MDAP), and distilled water control groups (n = 12). The assigned treatment was applied for 14 days. The CIE L*a*b calorimetric parameters were measured for all dentine specimens using a Chroma meter. One-way ANOVA and multiple comparisons were used for statistical analyses (p < 0.05). ΔE for the different treatments as compared to distilled water group was calculated. Results TAP and MTAP groups significantly affects the L* values of the root dentine (p < 0.05). ΔE change was noticeable between TAP and MTAP compared to the distilled water group. Conclusion The incorporation of minocycline in TAP medicaments, even in low concentrations, can still provoke a noticeable tooth discoloration.
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Affiliation(s)
- Alaa H A Sabrah
- Department of Conservative Dentistry, The University of Jordan, Amman, Jordan
| | - Ayah A Al-Asmar
- Department of Conservative Dentistry, The University of Jordan, Amman, Jordan
| | - Firas Alsoleihat
- Department of Conservative Dentistry, The University of Jordan, Amman, Jordan
| | - Heba Al-Zer
- Department of Conservative Dentistry, The University of Jordan, Amman, Jordan
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Cross R, Ling C, Day NPJ, McGready R, Paris DH. Revisiting doxycycline in pregnancy and early childhood--time to rebuild its reputation? Expert Opin Drug Saf 2016; 15:367-82. [PMID: 26680308 PMCID: PMC4898140 DOI: 10.1517/14740338.2016.1133584] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Introduction: Doxycycline is highly effective, inexpensive with a broad therapeutic spectrum and exceptional bioavailability. However these benefits have been overshadowed by its classification alongside the tetracyclines – class D drugs, contraindicated in pregnancy and in children under 8 years of age. Doxycycline-treatable diseases are emerging as leading causes of undifferentiated febrile illness in Southeast Asia. For example scrub typhus and murine typhus have an unusually severe impact on pregnancy outcomes, and current mortality rates for scrub typhus reach 12-13% in India and Thailand. The emerging evidence for these important doxycycline-treatable diseases prompted us to revisit doxycycline usage in pregnancy and childhood. Areas Covered: A systematic review of the available literature on doxycycline use in pregnant women and children revealed a safety profile of doxycycline that differed significantly from that of tetracycline; no correlation between the use of doxycycline and teratogenic effects during pregnancy or dental staining in children was found. Expert Opinion: The change of the US FDA pregnancy classification scheme to an evidence-based approach will enable adequate evaluation of doxycycline in common tropical illnesses and in vulnerable populations in clinical treatment trials, dosage-optimization pharmacokinetic studies and for the empirical treatment of undifferentiated febrile illnesses, especially in pregnant women and children.
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Affiliation(s)
- Ruby Cross
- a Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine , Mahidol University , Mae Sot , Tak , Thailand
| | - Clare Ling
- a Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine , Mahidol University , Mae Sot , Tak , Thailand.,b Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Tropical Medicine , Mahidol University , Bangkok , Thailand
| | - Nicholas P J Day
- b Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Tropical Medicine , Mahidol University , Bangkok , Thailand.,c Centre for Tropical Medicine & Global Health, Nuffield Department of Clinical Medicine , University of Oxford , Oxford , UK
| | - Rose McGready
- a Shoklo Malaria Research Unit, Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine , Mahidol University , Mae Sot , Tak , Thailand.,b Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Tropical Medicine , Mahidol University , Bangkok , Thailand.,c Centre for Tropical Medicine & Global Health, Nuffield Department of Clinical Medicine , University of Oxford , Oxford , UK
| | - Daniel H Paris
- b Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Tropical Medicine , Mahidol University , Bangkok , Thailand.,c Centre for Tropical Medicine & Global Health, Nuffield Department of Clinical Medicine , University of Oxford , Oxford , UK
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Park HB, Lee BN, Hwang YC, Hwang IN, Oh WM, Chang HS. Treatment of non-vital immature teeth with amoxicillin-containing triple antibiotic paste resulting in apexification. Restor Dent Endod 2015; 40:322-7. [PMID: 26587419 PMCID: PMC4650529 DOI: 10.5395/rde.2015.40.4.322] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Accepted: 07/11/2015] [Indexed: 11/11/2022] Open
Abstract
A recent treatment option for non-vital immature teeth in young patients is revascularization with triple antibiotic paste (TAP). However, tooth discoloration was reported with the use of conventional minocycline-containing TAP. In this case report, amoxicillin-containing TAP was used for revascularization of non-vital immature teeth to prevent tooth discoloration. At the 1 yr follow up, the teeth were asymptomatic on clinical examination and showed slight discoloration of the crown due to mineral trioxide aggregate (MTA) filling rather than amoxicillin-containing TAP. Radiographic examination revealed complete resolution of the periapical radiolucency, and closed apex with obvious periodontal ligament space. However, the root growth was limited, and the treatment outcome was more like apexification rather than revascularization. These results may be due to unstable blood clot formation which could not resist the condensation force of MTA filling, whether or not a collagen matrix was in place. These cases showed that although revascularization was not successful, apexification could be expected, resulting in the resolution of the periapical radiolucency and the closure of the apex. Therefore, it is worthwhile attempting revascularization of non-vital immature teeth in young patients.
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Affiliation(s)
- Hyon-Beom Park
- Department of Conservative Dentistry, Chonnam National University School of Dentistry, Gwangju, Korea
| | - Bin-Na Lee
- Department of Conservative Dentistry, Chonnam National University School of Dentistry, Gwangju, Korea
| | - Yun-Chan Hwang
- Department of Conservative Dentistry, Chonnam National University School of Dentistry, Gwangju, Korea
| | - In-Nam Hwang
- Department of Conservative Dentistry, Chonnam National University School of Dentistry, Gwangju, Korea
| | - Won-Mann Oh
- Department of Conservative Dentistry, Chonnam National University School of Dentistry, Gwangju, Korea
| | - Hoon-Sang Chang
- Department of Conservative Dentistry, Chonnam National University School of Dentistry, Gwangju, Korea
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Abstract
Minocycline is widely used as a first-line agent for papulopustular acne, and has previously been reported as causing stains on teeth that are still forming. This article reports a case of staining to only the crowns of unerupted third molars in a girl prescribed minocycline at age 16 for papulopustular acne. We review the literature in the area of minocycline teeth staining, consider the role of minocycline as a first-line agent for papulopustular acne, and outline strategies on the prevention of minocycline teeth staining. The case highlights current deficiencies in the disclosure information for minocycline, and provides information that is relevant to practitioners who may prescribe this drug.
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Affiliation(s)
- James Raymond
- Concord General Repatriation Hospital, Sydney, NSW, Australia
| | - David Cook
- Concord General Repatriation Hospital & The University of Sydney, Sydney, NSW, Australia
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Pramod JB, Marya A, Sharma V. Role of forensic odontologist in post mortem person identification. Dent Res J (Isfahan) 2013; 9:522-30. [PMID: 23559914 PMCID: PMC3612186 DOI: 10.4103/1735-3327.104868] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The natural teeth are the most durable organs in the bodies of vertebrates, and humankind's understanding of their own past and evolution relies heavily upon remnant dental evidence found as fossils. The use of features unique to the human dentition as an aid to personal identification is widely accepted within the forensic field. Comparative dental identifications play a major role in identifying the victims of violence, disaster or other mass tragedies. The comparison of ante-mortem and postmortem dental records to determine human identity has long been established. Indeed, it is still a major identification method in criminal investigations, mass disasters, grossly decomposed or traumatized bodies, and in other situations where visual identification is neither possible nor desirable. This article has comprehensively described some of the methods, and additional factors aiding in postmortem person identification.
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Affiliation(s)
- Jahagirdar B Pramod
- Department of Oral and Maxillo-Facial Pathology, Seema Dental College and Hospital, Rishikesh, Uttarakhand, India
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Krastl G, Allgayer N, Lenherr P, Filippi A, Taneja P, Weiger R. Tooth discoloration induced by endodontic materials: a literature review. Dent Traumatol 2012; 29:2-7. [DOI: 10.1111/j.1600-9657.2012.01141.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kim B, Song MJ, Shin SJ, Park JW. Prevention of tooth discoloration associated with triple antibiotics. Restor Dent Endod 2012. [DOI: 10.5395/rde.2012.37.2.119] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Bona Kim
- Department of Conservative Dentistry, Gangnam Severance Dental Hospital, Yonsei University College of Dentisty, Seoul, Korea
| | - Min-Ju Song
- Department of Conservative Dentistry, Gangnam Severance Dental Hospital, Yonsei University College of Dentisty, Seoul, Korea
| | - Su-Jung Shin
- Department of Conservative Dentistry, Gangnam Severance Dental Hospital, Yonsei University College of Dentisty, Seoul, Korea
| | - Jeong-Won Park
- Department of Conservative Dentistry, Gangnam Severance Dental Hospital, Yonsei University College of Dentisty, Seoul, Korea
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Lapid-Gortzak R, Nieuwendaal CP, Slomovic AR, Spanjaard L. Corneal staining after treatment with topical tetracycline. Cornea 2006; 25:969-70. [PMID: 17102677 DOI: 10.1097/01.ico.0000224647.66472.e3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE The purpose of this paper is to report a case of corneal staining after treatment with topical tetracycline. METHODS A patient with crystalline keratopathy caused by Streptococcus viridans after corneal transplantation was treated topically with tetracycline eye drops, based on results of bacterial sensitivity testing. After 3 weeks of intensive treatment, the donor cornea was stained with a brownish hue, which was ascribed to the tetracycline drops. RESULTS One patient with crystalline keratopathy developed corneal staining after intensive treatment with topical tetracycline eye drops. After a year of follow-up, the staining of the cornea had not changed significantly. CONCLUSION Hourly topical tetracycline eye drops may induce corneal pigmentation. To our knowledge, this is the first published case report of corneal staining caused by tetracycline eye drops.
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Affiliation(s)
- Ruth Lapid-Gortzak
- Department of Ophthalmology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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Tsokos M, Schröder S. Black thyroid: report of an autopsy case. Int J Legal Med 2005; 120:157-9. [PMID: 16151826 DOI: 10.1007/s00414-005-0028-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2005] [Accepted: 07/05/2005] [Indexed: 11/30/2022]
Abstract
A distinctive but very rare side effect of exposure to minocycline is black pigmentation of the thyroid gland. Until 2002, not more than 30 cases of black thyroid had been reported in the English literature. We report on a 24-year-old woman with known antemortem ingestion of minocycline. The woman suffered from a depressive disorder with repeated suicide attempts and committed suicide by a gunshot to the head. At autopsy, the thyroid gland showed coal-black coloration. Upon histology, clumps of black-brown pigment were seen in the colloid, and a granular precipitate of this pigment was noted in the apical portions of the follicular epithelial cells. The diagnosis of minocycline-associated black thyroid was established. Forensic pathological significance of black thyroid may arise from the fact that hypothyroidism has been occasionally associated with minocycline-related black thyroid and that hypothyroidism may contribute to the development of depressive disorders (and thus, in given cases, may be responsible for suicide attempts). Under this assumption, the presence of black thyroid would represent more than just a morphological curiosity in specific cases.
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Affiliation(s)
- Michael Tsokos
- Institute of Legal Medicine, University of Hamburg, Hamburg, Germany
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Abstract
It is essential that every health care professional who is involved with the prescription or recommendation of drugs be fully aware of any resultant disorders that may arise as a side-effect. A range of drugs can affect the teeth. In this review article, drugs that have the potential to induce changes in teeth have been classified as those leading to tooth discoloration (intrinsic and extrinsic), physical damage to tooth structure (enamel, dentin, and cementum), and alteration in tooth sensitivity.
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Affiliation(s)
- C J Tredwin
- Units of Conservative Dentistry and Oral Medicine, Eastman Dental Institute for Oral Health Care Sciences, University College London, 256 Gray's Inn Road, London WC1X 8LD, UK.
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Zhanel GG, Homenuik K, Nichol K, Noreddin A, Vercaigne L, Embil J, Gin A, Karlowsky JA, Hoban DJ. The glycylcyclines: a comparative review with the tetracyclines. Drugs 2004; 64:63-88. [PMID: 14723559 DOI: 10.2165/00003495-200464010-00005] [Citation(s) in RCA: 222] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The tetracycline class of antimicrobials exhibit a broad-spectrum of activity against numerous pathogens, including Gram-positive and Gram-negative bacteria, as well as atypical organisms. These compounds are bacteriostatic, and act by binding to the bacterial 30S ribosomal subunit and inhibiting protein synthesis. The tetracyclines have been used successfully for the treatment of a variety of infectious diseases including community-acquired respiratory tract infections and sexually transmitted diseases, as well in the management of acne. The use of tetracyclines for treating bacterial infections has been limited in recent years because of the emergence of resistant organisms with efflux and ribosomal protection mechanisms of resistance. Research to find tetracycline analogues that circumvented these resistance mechanisms has lead to the development of the glycylcyclines. The most developed glycylcycline is the 9-tert-butyl-glycylamido derivative of minocycline, otherwise known as tigecycline (GAR-936). The glycylcyclines exhibit antibacterial activities typical of earlier tetracyclines, but with more potent activity against tetracycline-resistant organisms with efflux and ribosomal protection mechanisms of resistance. The glycylcyclines are active against other resistant pathogens including methicillin-resistant staphylococci, penicillin-resistant Streptococcus pneumoniae, and vancomycin-resistant enterococci. Tigecycline is only available in an injectable formulation for clinical use unlike currently marketed tetracyclines that are available in oral dosage forms. Tigecycline has a significantly larger volume of distribution (> 10 L/kg) than the other tetracyclines (range of 0.14 to 1.6 L/kg). Protein binding is approximately 68%. Presently no human data are available describing the tissue penetration of tigecycline, although studies in rats using radiolabelled tigecycline demonstrated good penetration into tissues. Tigecycline has a half-life of 36 hours in humans, less than 15% of tigecycline is excreted unchanged in the urine. On the basis of available data, it does not appear that the pharmacokinetics of tigecycline are markedly influenced by patient gender or age. The pharmacodynamic parameter that best correlates with bacteriological eradication is time above minimum inhibitory concentration. Several animal studies have been published describing the efficacy of tigecycline. Human phase 1 and 2 clinical trials have been completed for tigecycline. Phase 2 studies have been conducted in patients with complicated skin and skin structure infections, and in patients with complicated intra-abdominal infections have been published as abstracts. Both studies concluded that tigecycline was efficacious and well tolerated. Few human data are available regarding the adverse effects or drug interactions resulting from tigecycline therapy; however, preliminary data report that tigecycline can be safely used, is well tolerated and that the adverse effects experienced were typical of the tetracyclines (i.e. nausea, vomiting and headache). Tigecycline appears to be a promising new antibacterial based on in vitro and pharmacokinetic/pharmacodynamic activity; however more clinical data are needed to fully evaluate its potential.
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Affiliation(s)
- George G Zhanel
- Department of Medical Microbiology, Faculty of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada.
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Abstract
With the increasing frequency of methicillin-resistant Staphylococcus aureus in immunocompromised hosts, clinicians are increasingly prescribing the oral treatment option of linezolid. Linezolid is the first of a new class of antibiotics, the oxazolidinones. The drug is generally well tolerated. However, mild-to-moderate adverse effects have been reported, such as gastrointestinal effects (most frequent), myelosuppression, skin eruptions, elevated liver enzymes, and tongue discoloration. As with any new drug on the commercial market, not all adverse effects are elucidated during preclinical trials. An immunocompromised 11-year-old girl with cellulitis of the toe experienced tooth discoloration after receiving a 28-day course of linezolid. The discoloration was present on the enamel of her lower anterior teeth and was superficial and reversible with dental cleaning.
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Affiliation(s)
- Kelly L Matson
- Department of Pharmacy Practice, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, USA.
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Mansilla J, Solis C, Chávez-Lomeli ME, Gama JE. Analysis of colored teeth from Precolumbian Tlatelolco: postmortem transformation or intravitam processes? AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2003; 120:73-82. [PMID: 12489138 DOI: 10.1002/ajpa.10152] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The etiological basis of the abnormal coloration of archaeological teeth has been an unsolved question for a long time. Differences in the appearance of some archaeological teeth from Precolumbian adult and infant skeletons, detected by external optical inspection, led us to study this problem. A blue stain is visible in a few of the deciduous erupted teeth, and a brown color in various unerupted teeth in the collection, while brown spots appear on some permanent teeth. Several processes or factors that may occur during one's life, others around the time of death, and still others resulting from postmortem alterations have been reported as potential causes of abnormal tooth coloration.A sample of 35 colored teeth and two soil layers taken from Tlatelolco were analyzed by particle-induced X-ray emission (PIXE) as well as selective dissolution techniques. Concentrations of total and extractable elements in enamel and soil layers (Cg1-Cg2) were obtained. This paper describes the occurrence and implications of a substantial secondary concentration of Zinc (Zn), manganese (Mn), strontium (Sr), and iron (Fe) in the deciduous erupted and nonerupted teeth as compared to that in the adult teeth. Our interpretation is that, in this archaeological context, the brown spots and blue stains on the teeth are due to differences in tooth enamel porosity and to a postmortem biogeochemical process. The alterations involve cumulization and diagenesis of iron, manganese, and organic matter solutions that were eluviated from the soil and are not the result of antemortem or perimortem conditions such as trauma or disease.
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Affiliation(s)
- J Mansilla
- Dirección de Antropología Física, Instituto Nacional de Antropología e Historia, México D.F. 11560, Mexico.
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Abstract
The use of the unique features of the human dentition to aid in personal identification is well accepted within the forensic field. Indeed, despite advances in DNA and other identification methodologies, comparative dental identifications still play a major role in identifying the victims of violence, disaster or other misfortune. The classic comparative dental identification employs the use of postmortem and antemortem dental records (principally written notes and radiographs) to determine similarities and exclude discrepancies. In many cases the tentative identification of the individual is unknown and therefore antemortem records cannot be located. In such a situation a dental profile of the individual is developed to aid the search for the individual's identity. With such a profile a forensic odontologist can identify and report indicators for age at time of death, race (within the four major ethnic groups) and sex. In addition to these parameters the forensic dentist may be able to give more insight into the individual. This paper outlines, for the non-expert, some of the additional personal information that can be derived from the teeth of the deceased, and which may assist in their ultimate identification.
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Affiliation(s)
- I A Pretty
- Faculty of Medicine, Department of Clinical Dental Sciences, The University of Liverpool, Daulby Street, Liverpool L69 3GN, United Kingdom
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