Crown Amputation with Intentional Root Retention for Advanced Feline Resorptive Lesions - A Clinical Study

1995 ◽  
Vol 12 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Gregg DuPont
Keyword(s):  
Periodontal Ligament ◽  
Tooth Extraction ◽  
Alveolar Bone ◽  
Tooth Roots ◽  
Iatrogenic Trauma ◽  
Two Factors ◽  
Molar Teeth ◽  
One Year ◽  
Almost All

Whole tooth extraction is generally considered to be the treatment of choice for teeth with advanced feline external odontoclastic resorptive lesions. These teeth often have both a weakened, brittle crown and radicular ankylosis. These two factors cause frustration and sometimes complications during attempts at extraction. This study investigated the alternative of intentionally leaving part or all of non-pathologic tooth roots in situ to prevent iatrogenic trauma to the patient, loss of alveolar bone, and prolonged healing of surgical defects. Fifty one roots from 23 teeth were radiographed 5–36 months following elective root retention; continued resorption without surrounding bony reaction was seen in almost all cases. In one cat, the roots retained normal periodontal ligament one year later, and in another cat that developed severe stomatitis, the intentionally retained roots were extracted at the same time that the remaining molar teeth were extracted.

scholarly journals Composite Sponges for in Situ Alveolar Bone Regeneration Following Tooth Extraction

2017 ◽  
Vol 131 (3) ◽  
pp. 580-584 ◽  
Author(s):  
Z.A. Guclu ◽  
A.P. Hurt ◽  
L. Ohia ◽  
N.J. Coleman
Keyword(s):  
Bone Regeneration ◽  
Tooth Extraction ◽  
Alveolar Bone

scholarly journals A High-resolution Immunohistochemical Method for studying Receptor Expression on the Periodontal Ligament of Whole-mount Human Tooth Roots

2016 ◽  
Vol 5 (2) ◽  
pp. 99-103
Author(s):  
Karmel V Headen ◽  
Afolabi O Ogunleye ◽  
David E Williams
Keyword(s):  
High Resolution ◽  
Periodontal Disease ◽  
Periodontal Ligament ◽  
Receptor Expression ◽  
Immunohistochemical Method ◽  
Human Tooth ◽  
Thin Sections ◽  
Tooth Roots ◽  
Whole Mount

ABSTRACT Aims Our laboratory has found that lysophosphatidic acid (LPA) and its cognate receptors [LPARs, (LPA1–6)] expressed by human gingival fibroblasts (GF) and periodontal ligament fibroblasts (PDLF) play key roles in oral fibroblast homeostasis and are implicated in the inflammation seen in periodontal disease. We have reported that PDLF express LPA1 and LPA3; however, information on the gross topographic distribution of LPARs in the periodontal ligament (PDL) was lacking, and therefore, we developed a simple method for in situ labeling of LPARs in the PDL of extracted teeth. Materials and methods Sectioning or grinding thin sections of demineralized or native teeth and periodontium have long been the standard methodologies used to assess biomarker distribution in the PDL; however, we modified traditional immunohistochemical labeling and used whole teeth with fixed, solvent permeabilized PDLs. Results LPA1 and LPA3 were specifically labeled in the PDL and could be visualized at both the macroand micro-levels. Conclusion This technique effectively labeled LPARs, and it can serve as a basis for the in situ visualization of other biomolecules expressed in the PDL. Clinical Significance The ability to observe PDL LPAR distribution at the macro-level complements the microscopic data, and it is useful for detecting and documenting molecular changes in the PDL/PDLF that were brought about by age, experimental treatments, or pathologies like periodontal disease. How to cite this article Cerutis DR, Headen KV, Ogunleye AO, Williams DE. A High-resolution Immunohistochemical Method for studying Receptor Expression on the Periodontal Ligament of Whole-mount Human Tooth Roots. Int J Experiment Dent Sci 2016;5(2):99-103.

Gene Expression of Growth Differentiation Factors in the Developing Periodontium of Rat Molars

2003 ◽  
Vol 82 (3) ◽  
pp. 166-171 ◽  
Author(s):  
K. Sena ◽  
Y. Morotome ◽  
O. Baba ◽  
T. Terashima ◽  
Y. Takano ◽  
...  
Keyword(s):  
Gene Expression ◽  
Periodontal Ligament ◽  
Root Formation ◽  
Alveolar Bone ◽  
Differentiation Factors ◽  
Insertion Sites ◽  
Initial Process ◽  
Rat Molars ◽  
In Cells

Growth and differentiation factors (GDF) 5, 6, and 7 are known to play roles in tendon and ligament formation, and are therefore probably involved in the formation of periodontal ligament. In this study, we sought to determine temporal and spatial expression of GDF-5, -6, and -7 mRNA in developing periodontal tissue of rat molars using in situ hybridization. GDF gene expression in the periodontal ligament was first detected in cells associated with the initial process of periodontal ligament fiber bundle formation. Gene signals were also detected in cells located along the alveolar bone and cementum surfaces, the insertion sites of periodontal ligaments, during the course of root formation. GDF expression in these cells were down-regulated after completion of root formation. Our results appeared to suggest the involvement of GDF-5, -6, and -7 in the formation of the dental attachment apparatus.

Expression of MMP-8 and MMP-13 mRNAs in Rat Periodontium during Tooth Eruption

2002 ◽  
Vol 81 (10) ◽  
pp. 673-678 ◽  
Author(s):  
M. Tsubota ◽  
Y. Sasano ◽  
I. Takahashi ◽  
M. Kagayama ◽  
H. Shimauchi
Keyword(s):  
Periodontal Ligament ◽  
Alveolar Bone ◽  
Small Population ◽  
Tooth Eruption ◽  
Periodontal Ligament Cells ◽  
Rt Pcr ◽  
Collagen Types ◽  
Paraffin Sections ◽  
Periodontal Tissues

The present study was designed to investigate mRNA expression of matrix metalloproteinase-8 (MMP-8) and MMP-13 in forming periodontium during tooth eruption in the rat. RT-PCR for the decalcified paraffin sections indicated expression of MMP-8 and MMP-13 in the periodontal tissues. In situ hydridization demonstrated expression of MMP-8 in osteoblasts, osteocytes, periodontal ligament cells, cementoblasts, and cementocytes along with collagen types I and III. In contrast, transcripts of MMP-13 were confined to a small population of osteoblasts and osteocytes in alveolar bone. The results suggested that MMP-8 may be involved in remodeling the periodontium during tooth eruption, and its expression may be coordinated with that of collagen types I and III, whereas the participation of MMP-13 may be rather limited.

Gambaran Pencabutan Gigi Permanen di Puskesmas Bitung Barat Kecamatan Maesa Kota Bitung Tahun 2012

e-GIGI ◽  
2013 ◽  
Vol 1 (2) ◽  
Author(s):  
Wulan Panelewen
Keyword(s):  
Periodontal Disease ◽  
Tooth Extraction ◽  
Total Population ◽  
Permanent Tooth ◽  
Permanent Teeth ◽  
Age Group ◽  
Record Card ◽  
Two Factors ◽  
Molar Teeth ◽  
Mandibular First Molar

ABSTRAKPencabutan gigi adalah proses pengeluaran gigi dari alveolus. Ada berbagai indikasi pencabutan gigi khususnya gigi permanen, namun yang paling sering disebabkan karena penyakit periodontal dan karies. Etiologi penyakit periodontal ada 2 faktor, yakni faktor primer dan faktor sekunder. Faktor primer penyakit periodontal ialah iritasi bakteri sedangkan faktor sekunder dapat bersifat lokal atau sistemik.Tujuan dari penelitian ini untuk mengetahui gambaran pencabutan gigi permanen di Puskesmas Bitung Barat Kecamatan Maesa Kota Bitung. Penelitian ini merupakan penelitian retrospektif. Data diambil menggunakan metode total populasi dengan cara mendata rekam medik tindakan pencabutan gigi permanen di poli gigi Puskesmas Bitung Barat Kecamatan Maesa Kota Bitung pada tahun 2012.Hasil penelitian menunjukan bahwa perempuan memiliki frekuensi pencabutan gigi permanen yang lebih tinggi dibandingkan laki-laki yakni perempuan sebesar 59,5%. Kelompok usia 35-44 tahun menunjukan pencabutan gigi yang paling tinggi dibandingkan kelompok usia lainnya, yakni sebesar 25,9%. Gigi permanen yang paling banyak dicabut ialah gigi molar pertama rahang bawah sebesar 20,3%. Penyakit periodontal merupakan indikasi yang paling banyak melatarbelakangi sehingga gigi permanen dicabut, yakni sebesar 91,7%.Kata Kunci: Pencabutan Gigi, Pencabutan Gigi Permanen, Puskesmas Bitung Barat Kecamatan Maesa Kota Bitung.ABSTRACKTooth extraction is the process of alveolar dental expenses. There are indications of a permanent tooth extraction, but most often caused by periodontal disease and caries. Etiology of periodontal disease there are two factors, the primary factors and secondary factors. The primary factors of periodontal disease is bacterial irritation while secondary factors may be local or systemic.Purpose of this study to describe the permanent tooth extraction in Puskesmas Bitung Barat Kecamatan Maesa Kota Bitung. This study is a retrospective study. Sample retrieved using the method of total population by medical record card patient who did tooth extraction in Puskesmas Bitung Barat Kecamatan Maesa Kota Bitung period 2012.The results showed that women had a permanent tooth extraction frequency higher than the men, that is women percentage of 59,5%. 35-44 age group showed the highest tooth extraction than any other age group, which is equal to 25,9%. Permanent teeth are the most deprived mandibular first molar teeth by 20,3%. Periodontal disease is an indication that the most cause permanent tooth extracted, which is equal to 91,7%.Keywords: Tooth extraction, Permanent tooth extraction, Puskesmas Bitung Barat Kecamatan Maesa Kota Bitung

scholarly journals General Factors of Anatomical Variation on the Size and Number of Dental Roots Influencing the Choice of Immediate Implants

2021 ◽  
Vol 6 (7) ◽  
Keyword(s):  
Tooth Extraction ◽  
Bone Repair ◽  
Alveolar Bone ◽  
Anatomical Variation ◽  
Anatomical Variations ◽  
Periodontal Tissues ◽  
Osseointegrated Implants ◽  
Tooth Roots ◽  
Immediate Implants ◽  
Dimensional Boundary

Bone metabolism is gaining more prominence due to osseointegrated implants. Even after a minimally traumatic tooth extraction, there are natural reductions and losses in the proportions of the alveolar bone and other periodontal tissues. Maintaining these dimensions has become a challenge for researchers. Immediate implants are set in the same surgical act as tooth extraction. Implants are recommended aiming at reducing the waiting time for bone repair and thus offering the necessary stimuli to the bone for its dimensional, functional, and esthetic maintenance. Planning prior to immediate setting should take into account anatomical variations and even anomalies mainly related to the dimensions and number of tooth roots. Among the general factors of anatomical variation, those related to Gender, Age, Biotype, and Ethnicity stand out. These data were provided in studies carried out by several authors in several countries, correlating them with the dimensions and number of tooth roots. A selection of works using measurement methods as Cone Beam Computed Tomography or direct measurements in extracted teeth was carried out. Studies confirm that Panoramic Radiography presents greater distortions and does not provide sharpness for dimensional boundary markings. Significant data were obtained and confirm the correlation of these general factors of anatomical variation with the length and number of tooth roots. Further studies need to be carried out, in order to provide clinicians with details of these variants, important in the planning and prior choice of the best shape and size of the dental implant to be installed.

Natural bone healing in compromised sockets after tooth extraction.

2020 ◽  
Author(s):  
Xueyin An ◽  
Seung-Mi Jeong ◽  
Byung-Ho Choi
Keyword(s):  
Bone Regeneration ◽  
Tooth Extraction ◽  
Periodontal Diseases ◽  
Bone Defects ◽  
Bone Plate ◽  
Implant Placement ◽  
Bone Width ◽  
Molar Teeth ◽  
One Year ◽  
Bone Gain

This study aimed to evaluate new bone regeneration within infected extraction sockets with bone defects using cone beam computed tomography (CBCT) at the 1-year follow-up and to evaluate the ability of bone regeneration after implant placement in a prosthetically-driven implant position. In this study, forty-eight patients requiring premolar or molar tooth extraction due to bone defects caused by periodontal diseases were included. Vertical and horizontal bone volume was assessed by overlapping the CBCT scan images with the full digital process. At 1-year post-extraction, a prosthetically-driven implant plan was conducted using virtual implant planning software. The result of this study showed that one year after extraction, CBCT revealed that the horizontal and vertical bone levels were significantly increased, with an overall mean buccolingual bone width gain of 5.46 ± 2.87 mm, and an overall mean vertical bone gain of 0.27 ± 1.28 mm for the lingual bone plate level and 3.50 ± 1.81 mm for the buccal bone plate level. Except for four (out of 48) sites, implants were virtually positioned in the center of the edentulous spaces. In summary, significant vertical and horizontal bone gain can occur within infected extraction sockets with bone defects 1 year after extracting premolar or molar teeth.

scholarly journals Diversity of Biodeteriorative Bacterial and Fungal Consortia in Winter and Summer on Historical Sandstone of the Northern Pergola, Museum of King John III’s Palace at Wilanow, Poland

2021 ◽  
Vol 11 (2) ◽  
pp. 620
Author(s):  
Magdalena Dyda ◽  
Agnieszka Laudy ◽  
Przemyslaw Decewicz ◽  
Krzysztof Romaniuk ◽  
Martyna Ciezkowska ◽  
...  
Keyword(s):  
Seasonal Changes ◽  
Microbial Community Composition ◽  
Fungal Communities ◽  
Bacterial Strains ◽  
Microbial Biodiversity ◽  
Acidophilic Bacteria ◽  
Almost All ◽  
Generation Sequencing ◽  
King John

The aim of the presented investigation was to describe seasonal changes of microbial community composition in situ in different biocenoses on historical sandstone of the Northern Pergola in the Museum of King John III’s Palace at Wilanow (Poland). The microbial biodiversity was analyzed by the application of Illumina-based next-generation sequencing methods. The metabarcoding analysis allowed for detecting lichenized fungi taxa with the clear domination of two genera: Lecania and Rhinocladiella. It was also observed that, during winter, the richness of fungal communities increased in the biocenoses dominated by lichens and mosses. The metabarcoding analysis showed 34 bacterial genera, with a clear domination of Sphingomonas spp. across almost all biocenoses. Acidophilic bacteria from Acidobacteriaceae and Acetobacteraceae families were also identified, and the results showed that a significant number of bacterial strains isolated during the summer displayed the ability to acidification in contrast to strains isolated in winter, when a large number of isolates displayed alkalizing activity. Other bacteria capable of nitrogen fixation and hydrocarbon utilization (including aromatic hydrocarbons) as well as halophilic microorganisms were also found. The diversity of organisms in the biofilm ensures its stability throughout the year despite the differences recorded between winter and summer.

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